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An oxide is a chemical compound
Chemical compound

A chemical compound is a Chemical substance consisting of two or more different chemical element Chemical bond together in a fixed mass ratio that can be split into simpler substances....
 contaning at least one oxygen
Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
 atom as well as at least one other element. Most of the Earth's crust consists of oxides. Oxides result when elements are oxidized by oxygen in air
AIR

Air is the part of Earth's atmosphere that humans breath and as such Air .Air may also refer to:...
. Combustion of hydrocarbon
Hydrocarbon

In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. With relation to chemical terminology, aromatic hydrocarbons or arenes, alkanes, alkenes and alkyne-based compounds composed entirely of carbon or hydrogen are referred to as "pure" hydrocarbons, whereas other hydrocarbons with bonded com...
s affords the two principal oxides of carbon
Carbon

Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
, carbon monoxide
Carbon monoxide

Carbon monoxide, with the chemical formula CO, is a colorless and odorless, tasteless, yet highly toxic gas. Its molecules consist of one carbon atom covalent bond to one oxygen atom....
 and carbon dioxide
Carbon dioxide

Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
.






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An oxide is a chemical compound
Chemical compound

A chemical compound is a Chemical substance consisting of two or more different chemical element Chemical bond together in a fixed mass ratio that can be split into simpler substances....
 contaning at least one oxygen
Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
 atom as well as at least one other element. Most of the Earth's crust consists of oxides. Oxides result when elements are oxidized by oxygen in air
AIR

Air is the part of Earth's atmosphere that humans breath and as such Air .Air may also refer to:...
. Combustion of hydrocarbon
Hydrocarbon

In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. With relation to chemical terminology, aromatic hydrocarbons or arenes, alkanes, alkenes and alkyne-based compounds composed entirely of carbon or hydrogen are referred to as "pure" hydrocarbons, whereas other hydrocarbons with bonded com...
s affords the two principal oxides of carbon
Carbon

Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
, carbon monoxide
Carbon monoxide

Carbon monoxide, with the chemical formula CO, is a colorless and odorless, tasteless, yet highly toxic gas. Its molecules consist of one carbon atom covalent bond to one oxygen atom....
 and carbon dioxide
Carbon dioxide

Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
. Even materials that are considered to be pure elements often contain a coating of oxides. For example, aluminium foil
Aluminium foil

Aluminium foil is aluminium prepared in thin metal leafs, with a thickness less than 0.2 mm / 0.008 in, although much thinner gauges down to 0.006 mm are commonly used....
 has a thin skin of Al2O3 that protects the foil from further corrosion
Corrosion

Corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen....
.

Virtually all elements burn in an atmosphere of oxygen. In the presence of water and oxygen (or simply air), some elements - lithium
Lithium

Lithium is a chemical element with the symbol Li and atomic number 3. It is a soft alkali metal with a silver-white color. Under standard conditions for temperature and pressure, it is the lightest metal and the least dense solid element....
, sodium
Sodium

Sodium is an element which has the symbol Na , atomic number 11, atomic mass 23 amu , and a common oxidation number +1. Sodium is a soft, silvery white, highly reactive element and is a member of the alkali metals within "group 1" ....
, potassium
Potassium

Potassium is a chemical element. It has the symbol K , atomic number 19, and atomic mass 39.0983. Potassium was first isolated from potash, hence the name....
, rubidium
Rubidium

Rubidium is a chemical element with the symbol Rb and atomic number 37. Rb is a soft, silvery-white metallic element of the alkali metal group....
, caesium
Caesium

Caesium or cesium is the chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of , which makes it one of only liquid metal that are liquid at or near room temperature....
, strontium
Strontium

Strontium is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically....
 and barium
Barium

Barium is a chemical element. It has the symbol Ba, and atomic number 56. Barium is a soft silvery metallic alkaline earth metal. It is never found in nature in its pure form due to its reactivity with Earth's atmosphere....
 - react rapidly, even dangerously, to give the hydroxides. In part for this reason, alkali and alkaline earth metals are not found in nature in their metallic, i.e., native, form. Caesium is so reactive with oxygen that it is used as a getter
Getter

Getters are reactive materials used for removing traces of gas from vacuum systems."Flashed getters" are prepared by arranging a reservoir of a volatile and reactive material inside the vacuum system; once the system is sealed, the material is heated, usually by induction heating and evaporates, reacting with residual gas, and deposit...
 in vacuum tube
Vacuum tube

In electronics, a vacuum tube, electron tube , thermionic valve, or just valve is a device used to amplifier, switch, otherwise modify, or create an Electricity signal by controlling the movement of electrons in a low-pressure space....
s, and solutions of potassium and sodium, so called NaK
NaK

NaK is a sodium - potassium alloy usually liquid at room temperature. Various commercial grades are available. NaK is highly reactive with air or water and must be handled with special precautions....
 are used to deoxygenate and dehydrate some organic solvents. The surface of most metals consist of oxides and hydroxides in the presence of air. A well known example is aluminium foil
Aluminium foil

Aluminium foil is aluminium prepared in thin metal leafs, with a thickness less than 0.2 mm / 0.008 in, although much thinner gauges down to 0.006 mm are commonly used....
, which is coated with a thin film of aluminium oxide
Aluminium oxide

Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula 23. It is also commonly referred to as alumina or aloxite in the mining, ceramic and materials science communities....
 that passivates
Passivation

Passivation is the process of making a material "passive" in relation to another material prior to using the materials together. For example, prior to storing hydrogen peroxide in an aluminium container, the container can be passivated by rinsing it with a dilute solution of nitric acid and peroxide alternating with deionized water....
 the metal, slowing further corrosion
Corrosion

Corrosion means the breaking down of essential properties in a material due to chemical reactions with its surroundings. In the most common use of the word, this means a loss of electrons of metals reacting with water and oxygen....
. The aluminium oxide layer can be built to greater thickness by the process of electrolytic
Electrolysis

In chemistry and manufacturing, electrolysis is a method of separating Chemical bond chemical compound by passing an electric current through them....
 anodising
Anodising

Anodizing, or anodising, is an electrolyte passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts....
. Although solid magnesium and aluminium react slowly with oxygen at STP
Standard conditions for temperature and pressure

In physical sciences, standard conditions for temperature and pressure are standard sets of conditions for experimental measurements, to allow comparisons to be made between different sets of data....
, they, like most metals, will burn in air, generating very high temperatures. As a consequence, finely divided powders of most metals can be dangerously explosive in air.

In dry oxygen, iron
Iron

Iron is a chemical element with the symbol Fe and atomic number 26. Iron is a Group 8 element and period 4 element. Iron is lustrous and silvery in color....
 readily forms iron(II) oxide
Iron(II) oxide

Iron oxide, also known as ferrous oxide, iron oxide/oxidized iron or more commonly rusted iron, is one of the iron oxides. It is a black-colored powder with the chemical formula ....
, but the formation of the hydrated ferric oxides, Fe2O3-2x(OH)x, that mainly comprise rust, typically requires oxygen and water. The production of free oxygen by photosynthetic
Photosynthesis

File:Seawifs global biosphere.jpgPhotosynthesis is a metabolic pathway that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight....
 bacteria
Bacteria

The Bacteria are a large group of unicellular microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals....
 some 3.5 billion years ago precipitated iron out of solution in the oceans as Fe2O3 in the economically-important iron ore hematite
Hematite

Hematite, Spelling differences#Simplification of ae .28.C3.A6.29 and oe .28.C5.93.29 h?matite, is the mineral form of Iron oxide , one of several iron oxides....
.

Due to its electronegativity
Electronegativity

Electronegativity, symbol χ, is a chemical property that describes the ability of an atom to attract electrons towards itself in a covalent bond....
, oxygen forms chemical bond
Chemical bond

A chemical bond is the physical process responsible for the attractive interactions between atoms and molecules, and that which confers stability to diatomic and polyatomic chemical compounds....
s with almost all elements to give the corresponding oxides. So-called noble metals (common examples: gold
Gold

Gold is a chemical element with the symbol Au and atomic number 79. It is a highly sought-after precious metal, having been used as money, as a store of value, in jewelry, in sculpture, and for ornamentation since the beginning of recorded history....
, platinum
Platinum

Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is derived from the Spanish term platina del Pinto, which is literally translated into "little silver of the Pinto River." It is in Group 10 of the periodic table of elements....
) resist direct chemical combination with oxygen, and substances like gold(III) oxide
Gold(III) oxide

Gold oxide is the stablest oxide of gold. It is a red-brown, thermally unstable solid that decomposes at 160 ?C. The hydrated form is weakly acidic and dissolves in concentrated alkali to form salts that are believed to contain the [Au4]− ion....
 must be generated by indirect routes.

Insolubility in water

The oxide ion
Ion

An ion is an atom or molecule which has lost or gained one or more electrons, giving it a positive or negative electrical charge. According to the Bohr_model this will be from or in the outer shield 'n'....
, O2-, is the conjugate base
Conjugate acid

Within the Johannes Nicolaus Br?nsted-Martin Lowry theory of acid-base reaction theories, a conjugate acid is the acid member, HX, of a pair of two compounds that transform into each other by gain or loss of a proton....
 of the hydroxide
Hydroxide

In chemistry, hydroxide is the name for the Diatomic molecule anion OH-, consisting of oxygen and hydrogen atoms, usually derived from the Dissociation of a base ....
 ion, OH-, and is encountered in ionic
Ionic compound

In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. Usually, the positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion....
 solid such as calcium oxide
Calcium oxide

Calcium oxide , commonly known as burnt lime, Lime or quicklime, is a widely used chemical compound. It is a white, Caustic and alkaline crystalline solid at room temperature....
. O2- is unstable in aqueous
Water

Water is a common chemical substance that is essential for the survival of all known forms of life. In typical usage, water refers only to its liquid form or States of matter, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam....
 solution
Solution

In chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is dissolved in another substance, known as a solvent....
 - its affinity for H+ is so great (pKb ~ -22) that it abstracts a proton
Proton

The proton is a subatomic particle with an electric charge of +1 elementary charge. It is found in the nucleus of each atom but is also stable by itself and has a second identity as the hydrogen ion, H+....
 from a solvent H2O molecule:

O2- + H2O ? 2 OH-


Although many anions are stable in aqueous solution, ionic oxides are not. For example, sodium chloride
Sodium chloride

Sodium chloride, also known as common salt, table salt, or halite, is a chemical compound with the chemical formula SodiumChlorine....
 dissolves readily in water to give a solution containing the constituent ions, Na+ and Cl-. Oxides do not behave like this. If an ionic oxide dissolves, the O2- ions become protonated. Although calcium oxide
Calcium oxide

Calcium oxide , commonly known as burnt lime, Lime or quicklime, is a widely used chemical compound. It is a white, Caustic and alkaline crystalline solid at room temperature....
, CaO, is said to "dissolve" in water, the products include hydroxide
Hydroxide

In chemistry, hydroxide is the name for the Diatomic molecule anion OH-, consisting of oxygen and hydrogen atoms, usually derived from the Dissociation of a base ....
:
CaO + H2O ? Ca2+ + 2 OH-


In fact, no monoatomic dianion is known to dissolve in water - all are so basic that they undergo hydrolysis
Hydrolysis

Hydrolysis is a chemical reaction during which one or more water are split into hydrogen and hydroxide ions which may go on to participate in further reactions....
. Concentrations of oxide ion in water are too low to be detectable with current technology.

Authentic soluble oxides do exist, but they release oxyanion
Oxyanion

An oxyanion or oxoanion is a chemical compound with the generic formula AxOyz-. . Oxyanions are formed by a large majority of the chemical elements....
s, not O2-. Well known soluble salts of oxyanions include sodium sulfate
Sodium sulfate

Sodium sulfate is the sodium salt of sulfuric acid. Anhydrous, it is a white crystalline solid of formula Na2SO4 known as the mineral thenardite; the hydrate Na2SO4?10H2O has been known as Glauber's salt or, historically, sal mirabilis since the 17th century....
 (Na2SO4), potassium permanganate
Potassium permanganate

Potassium permanganate is the inorganic chemical compound potassiummanganeseoxygen4, a water soluble salt consisting of equal Mole amounts of potassium and permanganate ions....
 (KMnO4), and sodium nitrate (NaNO3).

Nomenclature

In the 18th century, oxides were named calxes or calces after the calcination
Calcination

Calcination is a thermal treatment process applied to ores and other solid materials in order to bring about a thermal decomposition, phase transition, or removal of a volatile fraction....
 process used to produce oxides. Calx was later replaced by oxyd.

Oxides are usually named after the number of oxygen atoms in the oxide. Oxides containing only one oxygen are called oxides or monoxides, those containing two oxygen atoms are dioxides, three oxygen atoms makes it a trioxide, four oxygen atoms are tetroxides, and so on following the Greek
Greek language

Greek is an Indo-European languages native to the southern Balkan peninsula, the language of the Greek people. It forms an independent branch within Indo-European....
 numerical prefix
Numerical prefix

Numerical prefixes are usually derived from the words for numbers in various languages, most commonly Greek language and Latin, although this is not always the case....
es. In the older literature and continuing in industry, oxides are named by contracting the element name with "a." Hence alumina, magnesia, chromia, are, respectively, Al2O3, MgO, Cr2O3.

Two other types of oxide are peroxide
Peroxide

A peroxide is a compound containing an oxygen-oxygen chemical bond. The simplest stable peroxide is hydrogen peroxide. Superoxides, dioxygenyls, ozones and ozonides compound are considered separately....
, O22-, and superoxide
Superoxide

Superoxide is the anion O2−. It is important as the product of the one-electron reduction of dioxygen, which occurs widely in nature....
, O2-. In such species, oxygen is assigned higher oxidation state
Oxidation state

In chemistry, the oxidation state is an indicator of the degree of oxidation of an atom in a chemical compound. The formal oxidation state is the hypothetical Electrical charge that an atom would have if all bonds to atoms of different elements were 100% Ionic bond....
s than oxide.

Types of oxides

Oxides of more electropositive elements tend to be basic. They are called basic anhydrides; adding water, they may form basic hydroxide
Hydroxide

In chemistry, hydroxide is the name for the Diatomic molecule anion OH-, consisting of oxygen and hydrogen atoms, usually derived from the Dissociation of a base ....
s. For example, sodium oxide
Sodium oxide

Sodium oxide is a chemical compound with the formula Sodium2Oxygen. It is used in ceramics and glasses. Treatment with water affords sodium hydroxide....
 is basic; when hydrated, it forms sodium hydroxide
Sodium hydroxide

Sodium hydroxide , also known as lye, caustic soda and sodium hydrate, is a caustic metallic Base . Sodium hydroxide forms a strong alkaline solution when dissolved in a solvent such as water, however, only the hydroxide ion is basic....
.

Oxides of more electronegative elements tend to be acidic. They are called acid anhydrides; adding water, they form oxoacid
Oxoacid

An oxoacid is an acid which contains oxygen. More specifically, it is an acid which:#contains oxygen;#contains at least one other Chemical element;...
s. For example, dichlorine heptoxide
Dichlorine heptoxide

Dichlorine heptoxide is the chemical compound with the Chemical formula Cl2O7. This chlorine oxide is the acid anhydride of perchloric acid....
 is acid; perchloric acid
Perchloric acid

Perchloric acid, HClO4, is an oxoacid of chlorine and is a colorless liquid soluble in water . It is a strong acid comparable in strength to sulfuric acid and nitric acids....
 is a more hydrated form.

Some oxides can act as both acid and base at different times. They are amphoteric. An example is aluminium oxide
Aluminium oxide

Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula 23. It is also commonly referred to as alumina or aloxite in the mining, ceramic and materials science communities....
. Some oxides do not show behavior as either acid or base.

The oxides of the chemical element
Chemical element

A chemical element is a type of atom that is distinguished by its atomic number; that is, by the number of protons in its atomic nucleus. The term is also used to refer to a pure chemical Chemical substance composed of atoms with the same number of protons....
s in their highest oxidation state
Oxidation state

In chemistry, the oxidation state is an indicator of the degree of oxidation of an atom in a chemical compound. The formal oxidation state is the hypothetical Electrical charge that an atom would have if all bonds to atoms of different elements were 100% Ionic bond....
 are predictable and the chemical formula
Chemical formula

A chemical formula is a way of expressing information about the atoms that constitute a particular chemical compound, and how the relationship between those atoms changes in chemical reactions....
 can be derived from the number of valence electron
Valence electron

In science, valence electrons are the electrons contained in the outermost, or valence, electron shell of an atom. Valence electrons are important in determining how an chemical element reacts chemically with other elements: The fewer valence electrons an atom holds, the less reactivity it becomes and the more likely it is to chemical rea...
s for that element. Even the chemical formula of O4, tetraoxygen
Tetraoxygen

The tetraoxygen molecule , also called oxozone was first predicted in 1924 by Gilbert N. Lewis, who proposed it as an explanation for the failure of liquid oxygen to obey Curie's law....
, is predictable as a group 16 element. One exception is copper
Copper

Copper is a chemical element with the symbol Cu and atomic number 29.It is a ductile metal with very high thermal and electrical conductivity....
 for which the highest oxidation state oxide is copper(II) oxide
Copper(II) oxide

Copper oxide or cupric oxide is the higher oxide of copper. As a mineral, it is known as tenorite....
 and not copper(I) oxide
Copper(I) oxide

Copper oxide or cuprous oxide is an oxide of copper. It is insoluble in water and organic solvents. Copper oxide dissolves in concentrated ammonia solution to form the colorless complex [Cu2]+, which easily redox in air to the blue [Cu42]2+....
. Another exception is fluoride
Fluoride

Fluoride is the Redox form of fluorine. Both organic compounds and inorganic compounds containing the chemical element fluorine are considered fluorides....
 that does not exist as expected as F2O7 but as OF2
Oxygen difluoride

Oxygen difluoride is the chemical compound with the chemical formula OF2. As predicted by VSEPR theory, the molecule adopts a bent structure like water, but it has very different properties, being a strong oxidizer....
. . Since F is more electronegative
Electronegativity

Electronegativity, symbol χ, is a chemical property that describes the ability of an atom to attract electrons towards itself in a covalent bond....
 than O, OF2
Oxygen difluoride

Oxygen difluoride is the chemical compound with the chemical formula OF2. As predicted by VSEPR theory, the molecule adopts a bent structure like water, but it has very different properties, being a strong oxidizer....
 does not represent an oxide of fluorine, but instead represents a fluoride
Fluoride

Fluoride is the Redox form of fluorine. Both organic compounds and inorganic compounds containing the chemical element fluorine are considered fluorides....
 of oxygen. Phosphorus pentoxide
Phosphorus pentoxide

Phosphorus pentoxide is a chemical compound with formula Phosphorus2Oxygen5. This white crystalline solid is the anhydride of phosphoric acid....
, the third exception is not properly represented by the chemical formula P
Phosphorus

Phosphorus is the chemical element that has the symbol P and atomic number 15. The name comes from the and . A Valency nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate minerals....
2O
Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
5 but by P
Phosphorus

Phosphorus is the chemical element that has the symbol P and atomic number 15. The name comes from the and . A Valency nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate minerals....
4O
Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
10

List of all known oxides sorted by oxidation state


  • Element in -1 oxidation state
    • Oxygen difluoride
      Oxygen difluoride

      Oxygen difluoride is the chemical compound with the chemical formula OF2. As predicted by VSEPR theory, the molecule adopts a bent structure like water, but it has very different properties, being a strong oxidizer....
       (O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      F
      Fluorine

      Fluorine is the chemical element with the symbol F and atomic number 9. Fluorine forms a single bond with itself in elemental form, resulting in the diatomic F2 molecule....
      2)


  • Element in multiple oxidation states
    • Antimony tetroxide
      Antimony tetroxide

      Antimony tetroxide is an inorganic compound with the formula Sb2O4. This material, which exists as the mineral stibiconite , is white but reversibly yellows upon heating....
       (Sb
      Antimony

      Antimony is a chemical element with the symbol Sb and atomic number 51. A metalloid, antimony has four allotropy forms. The stable form of antimony is a blue-white metalloid....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Cobalt(II,III) oxide
      Cobalt(II,III) oxide

      Cobalt oxide is chemical compound with the chemical formula Co3O4. It is a black solid, and a Inner sphere electron transfer#Mixed-valency, containing both Co and Co oxidation states....
       (Co
      Cobalt

      Cobalt is a hard, lustrous, grey metal, a chemical element with symbol Co and atomic number 27. Although cobalt-based colors and pigments have been used since ancient times, and miners have long used the name kobold ore for some minerals, cobalt was only discovered in 1735 by Georg Brandt....
      3O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Iron(II,III) oxide
      Iron(II,III) oxide

      Iron oxide is the chemical compound with formula Fe3O4. It is one of a number of iron oxides. It is found in nature as the mineral magnetite....
       (Fe
      Iron

      Iron is a chemical element with the symbol Fe and atomic number 26. Iron is a Group 8 element and period 4 element. Iron is lustrous and silvery in color....
      3O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Lead tetroxide (Pb
      Lead

      Lead is a main-group Chemical element with symbol Pb and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metal ....
      3O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Manganese(II,III) oxide
      Manganese(II,III) oxide

      Manganese oxide is the chemical compound with formula Mn3O4. Manganese is present in two oxidation states +2 and +3 and the formula is sometimes written as MnO.Mn2O3....
       (Mn
      Manganese

      Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
      3O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Silver(I,III) oxide (Ag
      Silver

      Silver is a chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )


  • Element in +1 oxidation state
    • Copper(I) oxide
      Copper(I) oxide

      Copper oxide or cuprous oxide is an oxide of copper. It is insoluble in water and organic solvents. Copper oxide dissolves in concentrated ammonia solution to form the colorless complex [Cu2]+, which easily redox in air to the blue [Cu42]2+....
       (Cu
      Copper

      Copper is a chemical element with the symbol Cu and atomic number 29.It is a ductile metal with very high thermal and electrical conductivity....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Dicarbon monoxide
      Dicarbon monoxide

      Dicarbon monoxide is an extremely Reactivity molecule that contains two carbon atoms and one oxygen atom. It is Covalent bond. It is an intermediate in the Photodissociation of carbon suboxide....
       (C
      Carbon

      Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Dichlorine monoxide
      Dichlorine monoxide

      Dichlorine monoxide, Cl2O, is a chlorine oxide.Dichlorine monoxide is the anhydride of hypochlorous acid; it is related to hypochlorites generally....
       (Cl
      Chlorine

      Chlorine...
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Lithium oxide
      Lithium oxide

      Lithium oxide or lithia is an inorganic chemical compound. Lithium oxide is formed along with small amounts of lithium peroxide when lithium metal is burned in the air and combines with oxygen:Pure Li2O can be produced by the thermal decomposition of lithium peroxide, Li2O2 at 450?C...
       (Li
      Lithium

      Lithium is a chemical element with the symbol Li and atomic number 3. It is a soft alkali metal with a silver-white color. Under standard conditions for temperature and pressure, it is the lightest metal and the least dense solid element....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Potassium oxide
      Potassium oxide

      Potassium oxide is a Chemical compound of potassium and oxygen. This pale yellow solid, the simplest oxide of potassium, is a rarely encountered, highly reactive species....
       (K
      Potassium

      Potassium is a chemical element. It has the symbol K , atomic number 19, and atomic mass 39.0983. Potassium was first isolated from potash, hence the name....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Rubidium oxide
      Rubidium oxide

      Rubidium oxide is the chemical compound with the chemical formula Rb2O. Rubidium oxide is highly reactive towards water, and therefore it would not be expected to occur naturally....
       (Rb
      Rubidium

      Rubidium is a chemical element with the symbol Rb and atomic number 37. Rb is a soft, silvery-white metallic element of the alkali metal group....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Silver(I) oxide
      Silver(I) oxide

      Silver oxide is the chemical compound with the chemical formula Ag2O. It is a fine black or dark brown powder that is used to prepare other silver compounds....
       (Ag
      Silver

      Silver is a chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Thallium oxide
      Thallium oxide

      Thallium oxide is the general name of several oxides of thallium. The most common is Tl2O in which thallium is in its +1 oxidation state....
       (Tl
      Thallium

      Thallium is a chemical element with the symbol Tl and atomic number 81. This soft gray malleable poor metal resembles tin but discolors when exposed to air....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Sodium oxide
      Sodium oxide

      Sodium oxide is a chemical compound with the formula Sodium2Oxygen. It is used in ceramics and glasses. Treatment with water affords sodium hydroxide....
       (Na
      Sodium

      Sodium is an element which has the symbol Na , atomic number 11, atomic mass 23 amu , and a common oxidation number +1. Sodium is a soft, silvery white, highly reactive element and is a member of the alkali metals within "group 1" ....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Water (hydrogen oxide)
      Water (molecule)

      File:Blue-water-pool.jpgWater is the most abundant molecule on Earth's surface, constituting about 70% of the Earth's surface in liquid, solid, and gaseous states....
       (H
      Hydrogen

      Hydrogen is the chemical element with atomic number 1. It is represented by the chemical symbol H. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly combustion and explosive Diatomic molecule gas with the molecular formula H2....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )


  • Element in +2 oxidation state
    • Aluminium monoxide
      Aluminium monoxide

      Aluminium monoxide, or aluminium oxide, is a compound of aluminium and oxygen with the chemical formula AlO. It has been detected in the gas phase in the high atmosphere following high atmosphere grenade explosions and in stellar absorption spectra ...
       (Al
      Aluminium

      Aluminium or aluminum is a silvery white and ductile member of the boron group of chemical elements. It has the symbol Al; its atomic number is 13....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Barium oxide
      Barium oxide

      Barium oxide, BaO, is a white hygroscopic chemical compound formed by the burning of barium in oxygen, although it is often formed through the decomposition of other barium compounds....
       (Ba
      Barium

      Barium is a chemical element. It has the symbol Ba, and atomic number 56. Barium is a soft silvery metallic alkaline earth metal. It is never found in nature in its pure form due to its reactivity with Earth's atmosphere....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Beryllium oxide
      Beryllium oxide

      Beryllium oxide is a white crystalline oxide. It is notable as it is an electrical insulator with a thermal conductivity higher than any other non-metal except diamond, and actually exceeds that of some metals....
       (Be
      Beryllium

      Beryllium is a chemical element with the symbol Be and atomic number 4.A Bivalent element, beryllium is found naturally only combined with other elements in minerals....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Cadmium oxide
      Cadmium oxide

      Cadmium oxide is an inorganic compound with the chemical formula cadmiumO. CdO is one of the main precursors to other cadmium compounds It crystallizes in a cubic lattice like sodium chloride, with octahedral cation and anion centers....
       (Cd
      Cadmium

      Cadmium is a chemical element with the symbol Cd and atomic number 48. A relatively abundant , soft, bluish-white, transition metal, cadmium is known to cause cancer and occurs with zinc ores....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Calcium oxide
      Calcium oxide

      Calcium oxide , commonly known as burnt lime, Lime or quicklime, is a widely used chemical compound. It is a white, Caustic and alkaline crystalline solid at room temperature....
       (Ca
      Calcium

      Calcium is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078 amu. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the earth's Crust ....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Carbon monoxide
      Carbon monoxide

      Carbon monoxide, with the chemical formula CO, is a colorless and odorless, tasteless, yet highly toxic gas. Its molecules consist of one carbon atom covalent bond to one oxygen atom....
       (C
      Carbon

      Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Cobalt(II) oxide
      Cobalt(II) oxide

      Cobalt oxide appears as olive-green to red crystals, or greyish or black powder. It is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt salts....
       (Co
      Cobalt

      Cobalt is a hard, lustrous, grey metal, a chemical element with symbol Co and atomic number 27. Although cobalt-based colors and pigments have been used since ancient times, and miners have long used the name kobold ore for some minerals, cobalt was only discovered in 1735 by Georg Brandt....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Copper(II) oxide
      Copper(II) oxide

      Copper oxide or cupric oxide is the higher oxide of copper. As a mineral, it is known as tenorite....
       (Cu
      Copper

      Copper is a chemical element with the symbol Cu and atomic number 29.It is a ductile metal with very high thermal and electrical conductivity....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Iron(II) oxide
      Iron(II) oxide

      Iron oxide, also known as ferrous oxide, iron oxide/oxidized iron or more commonly rusted iron, is one of the iron oxides. It is a black-colored powder with the chemical formula ....
       (Fe
      Iron

      Iron is a chemical element with the symbol Fe and atomic number 26. Iron is a Group 8 element and period 4 element. Iron is lustrous and silvery in color....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Lead(II) oxide
      Lead(II) oxide

      Lead oxide is the chemical compound with the chemical formula leadoxide. Lead oxide occurs in two forms: red, having a tetragonal crystal system and yellow, having an orthorhombic crystal system....
       (Pb
      Lead

      Lead is a main-group Chemical element with symbol Pb and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metal ....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Magnesium oxide
      Magnesium oxide

      Magnesium oxide, or magnesia, is a white solid mineral that occurs naturally as periclase and is a source of magnesium . It has an empirical formula of ....
       (Mg
      Magnesium

      Magnesium is a chemical element with the symbol Mg, atomic number 12, atomic weight 24.3050 and common oxidation number +2.Magnesium, an alkaline earth metal, is the ninth most abundance of the chemical elements in the universe by mass....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Mercury(II) oxide
      Mercury(II) oxide

      Mercury oxide, also called mercuric oxide or simply mercury oxide, has a formula of Mercury oxygen and a formula weight of 216.6. It has a red or orange color....
       (O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Nickel(II) oxide
      Nickel(II) oxide

      Nickel oxide is the chemical compound with the formula NickelOxygen. It is notable as being the only well characterised oxide of nickel although there have been many reports of others ....
       (Ni
      Nickel

      Nickel is a chemical element, with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Nitrogen oxide
      Nitrogen oxide

      The term nitrogen oxide typically refers to any binary compound of oxygen and nitrogen, or to a mixture of such compounds:* Nitric oxide , nitrogen oxide...
       (N
      Nitrogen

      Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Palladium(II) oxide
      Palladium(II) oxide

      Palladium oxide is the chemical compound of formula PalladiumOxygen. It is the only well characterised oxide of palladium. It is prepared by reacting the metal with oxygen below 875 ?C as PdO dissociates above about 900 ?C....
       (PdO
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Strontium oxide
      Strontium oxide

      Strontium oxide or strontia, SrO, is formed when strontium reacts with oxygen. Burning strontium in air results in a mixture of strontium oxide and strontium nitride....
       (Sr
      Strontium

      Strontium is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Sulphur monoxide (S
      Sulfur

      Sulfur or sulphur is the chemical element that has the atomic number 16. It is denoted with the symbol S. It is an abundant Valence non-metal....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Tin(II) oxide
      Tin(II) oxide

      Tin oxide is a compound of tin and oxygen where tin has the oxidation state of +2. There are two forms, a stable blue-black form and a metastable red form....
       (Sn
      Tin

      Tin is a chemical element with the symbol Sn and atomic number 50. Tin is obtained chiefly from the mineral cassiterite, where it occurs as an oxide, SnO2....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Titanium(II) oxide
      Titanium(II) oxide

      Titanium oxide is an inorganic chemical compound of titanium and oxygen. It can be prepared from titanium dioxide and titanium metal at 1500?C....
       (Ti
      Titanium

      Titanium is a chemical element with the symbol Ti and atomic number 22. Sometimes called the ?space age metal?, it has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver colour....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Vanadium(II) oxide
      Vanadium(II) oxide

      Vanadium oxide, VO, is one of the many vanadium oxide. VO is a long-lived, electronically-neutral reagent chemical. It adopts a distorted Sodium chloride#Crystal structure and contains weak V-V metal to metal bonds....
       (V
      Vanadium

      Vanadium is the chemical element with the symbol V and atomic number 23. It is a soft, silvery grey, ductile transition metal. The formation of an oxide layer stabilizes the metal against oxidation....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )
    • Zinc oxide
      Zinc oxide

      Zinc oxide is an inorganic compound with the Chemical formula ZnO. It usually appears as a white powder, nearly insoluble in water. The powder is widely used as an additive into numerous materials and products including plastics, ceramics, glass, cement, rubber , lubricants, paints, ointments, adhesives, sealants, pigments, foods , batteries,...
       (Zn
      Zinc

      Zinc is a metallic chemical element with the symbol Zn and atomic number 30. It is a first-row transition metal of the group 12 element of the periodic table....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      )


  • Element in +3 oxidation state
    • Aluminium oxide
      Aluminium oxide

      Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula 23. It is also commonly referred to as alumina or aloxite in the mining, ceramic and materials science communities....
       (Al
      Aluminium

      Aluminium or aluminum is a silvery white and ductile member of the boron group of chemical elements. It has the symbol Al; its atomic number is 13....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Antimony trioxide
      Antimony trioxide

      Antimony trioxide is the chemical compound with the Chemical formula Sb2O3. It is the most important commercial compound of antimony....
       (Sb
      Antimony

      Antimony is a chemical element with the symbol Sb and atomic number 51. A metalloid, antimony has four allotropy forms. The stable form of antimony is a blue-white metalloid....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Arsenic trioxide
      Arsenic trioxide

      Arsenic trioxide is the most important commercial compound of arsenic, and the main starting material for arsenic chemistry. It is the highly toxic byproduct of certain kinds of ore processing, for example gold mining....
       (As
      Arsenic

      Arsenic is a well-known chemical element that has the symbol As and atomic number 33. Arsenic was first documented by Albertus Magnus in 1250....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Bismuth trioxide
      Bismuth trioxide

      Bismuth oxide is the most industrially important compound of bismuth. It is also a common starting point for bismuth chemistry. It is found naturally as the mineral bismite and sphaerobismoite , but it is usually obtained as a by-product of the smelting of copper and lead ores....
       (Bi
      Bismuth

      Bismuth is a chemical element that has the symbol Bi and atomic number 83. This heavy, brittle, white crystalline trivalent poor metal has a pink tinge and chemically resembles arsenic and antimony....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Boron oxide (B
      Boron

      Boron is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent metalloid element which occurs abundantly in the evaporite ores borax and ulexite....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Chromium(III) oxide
      Chromium(III) oxide

      Chromium oxide is the inorganic compound of the Chemical formula Cr2O3. It is one of principal oxides of chromium and is used as a pigment....
       (Cr
      Chromium

      Chromium is a chemical element which has the symbol Cr and atomic number 24. It is a steely-gray, Lustre , hard metal that takes a high polish and has a high melting point....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Dinitrogen trioxide
      Dinitrogen trioxide

      Dinitrogen trioxide is the chemical compound with the chemical formula N2O3. This deep blue liquid is one of binary nitrogen oxides....
       (N
      Nitrogen

      Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Erbium(III) oxide
      Erbium(III) oxide

      Erbium oxide, a pink solid, is a compound of erbium sometimes used as a colouring for glasses and a dopant for optical fibres and optical amplifiers....
       (Er
      Erbium

      Erbium is a chemical element with the symbol Er and atomic number 68. A rare, silvery, white metallic lanthanide, erbium is solid in its normal state....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Gadolinium(III) oxide
      Gadolinium(III) oxide

      Gadolinium oxide is a chemical compound. It has the B-M2O3 structure similar to the lanthanide sesquioxides, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3....
       (Gd
      Gadolinium

      Gadolinium is a chemical element that has the symbol Gd and atomic number 64....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Gallium(III) oxide
      Gallium(III) oxide

      Gallium oxide is a chemical compound used in vacuum deposition and as part of the manufacturing of semiconductor devices.References...
       (Ga
      Gallium

      Gallium is a chemical element that has the symbol Ga and atomic number 31. Elemental gallium does not occur in nature, but as the Ga salt, in trace amounts in bauxite and zinc ores....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Holmium(III) oxide
      Holmium(III) oxide

      Holmium oxide, is a chemical compound with the chemical formula Ho2O3. It is sometimes used in making specialty glasses. Together with dysprosium oxide holmium oxide is one of the most powerfully Paramagnetism substances known....
       (Ho
      Holmium

      Holmium is a chemical element with the symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a relatively soft and malleable silvery-white metallic element, which is stable in dry air at room temperature....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Indium(III) oxide
      Indium(III) oxide

      Indium oxide is a chemical compound, an amphoteric oxide of indium. It forms bixbyite-type cubic crystals.Indium oxide is used in some types of batteries, thin film infrared reflectors transparent for visible light , some optical coatings, and some antistatic coatings....
       (In
      Indium

      Indium is a chemical element with chemical symbol In and atomic number 49. This rare, soft, malleable and easily Fusible alloy Post-transition metal is chemically similar to aluminium or gallium but more closely resembles zinc ....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Iron(III) oxide
      Iron(III) oxide

      Iron oxide?also known as ferric oxide, Hematite, red iron oxide, synthetic maghemite, colcothar, or simply rust?is one of the several oxide Chemical compounds of iron, and has Paramagnetism properties....
       (Fe
      Iron

      Iron is a chemical element with the symbol Fe and atomic number 26. Iron is a Group 8 element and period 4 element. Iron is lustrous and silvery in color....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Lanthanum(III) oxide
      Lanthanum(III) oxide

      Lanthanum oxide is La2O3, a chemical compound containing the rare earth element lanthanum and oxygen. It is used to develop ferroelectric materials, and in optical materials....
       (La
      Lanthanum

      Lanthanum is a chemical element with the symbol La and atomic number 57.Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table and is a lanthanoid....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Lutetium(III) oxide
      Lutetium(III) oxide

      Lutetium oxide, a white solid, is a Cubic compound of lutetium sometimes used in the preparation of specialty glasses. It is also called lutecia....
       (Lu
      Lutetium

      Lutetium is a chemical element with the symbol Lu and atomic number 71. A silvery-white rare metal, lutetium is the heaviest member of the rare-earth group....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Nickel(III) oxide
      Nickel(III) oxide

      Nickel oxide has been referred to in the literature but is not a well characterised compound. The substance black nickel oxide is sometimes described as being Ni2O3 however the composition quoted by suppliers has a nickel content of around 77% by weight whereas Ni2O3 would have 70.98% Ni by w...
       (Ni
      Nickel

      Nickel is a chemical element, with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Phosphorus trioxide
      Phosphorus trioxide

      Phosphorus trioxide is the chemical compound with the formula P4O6. Although it should properly be named tetraphosphorus hexoxide, the name phosphorus trioxide preceded the knowledge of the compound's molecular structure, and its usage continues today....
       (P
      Phosphorus

      Phosphorus is the chemical element that has the symbol P and atomic number 15. The name comes from the and . A Valency nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate minerals....
      4O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      6)
    • Promethium(III) oxide
      Promethium(III) oxide

      Promethium oxide is a promethium compound with the formula Pm2O3. It is the most common form of promethium....
       (Pm
      Promethium

      Promethium is a chemical element with the symbol Pm and atomic number 61. It is notable for being the only other exclusively radioactive element besides technetium which is followed by chemical elements that have stable isotopes....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Rhodium(III) oxide
      Rhodium(III) oxide

      Rhodium oxide is the chemical compound with the formula RhodiumOxygen.Conditions/substances to avoid are: extreme heat, organic solvents, hydrochloric acid, hydrosulfuric acid and ammonia....
       (Rh
      Rhodium

      Rhodium is a chemical element that is a rare, silvery-white, hard transition metal and a member of the platinum group. Rhodium is found in platinum ores and is used in alloys with platinum and as a catalyst....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Samarium(III) oxide
      Samarium(III) oxide

      Samarium oxide is a chemical compound.References...
       (Sm
      Samarium

      Samarium is a chemical element with the symbol Sm and atomic number 62....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Scandium(III) oxide
      Scandium(III) oxide

      Scandium oxide, Sc2O3, scandia is a high melting white solid used in high-temperature systems , electronic ceramics, and glass composition ....
       (Sc
      Scandium

      Scandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic transition metal, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanides....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Terbium(III) oxide
      Terbium(III) oxide

      Terbium oxide is an inorganic chemical compound.Further reading External links...
       (Tb
      Terbium

      Terbium is a chemical element with the symbol Tb and atomic number 65....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Thallium(III) oxide
      Thallium(III) oxide

      Thallium oxide is a chemical compound of thallium and oxygen. It occurs in nature as the rare mineral avicennite. Its structure is related to that of Mn2O3 which has a bixbyite like structure....
       (Tl
      Thallium

      Thallium is a chemical element with the symbol Tl and atomic number 81. This soft gray malleable poor metal resembles tin but discolors when exposed to air....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Thulium(III) oxide
      Thulium(III) oxide

      Thulium oxide is a pale green solid compound, with the formula thulium2oxygen3. It was first isolated in 1878 from an impure sample of erbia by Per Teodor Cleve, who named it thulia....
       (Tm
      Thulium

      Thulium is a chemical element that has the symbol Tm and atomic number 69. A lanthanide element, thulium is the least abundant of the Rare earth elements....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Titanium(III) oxide
      Titanium(III) oxide

      Titanium oxide is a chemical compound of titanium and oxygen. It is prepared by reacting titanium dioxide with titanium metal at 1600?C.Ti2O3 has the alumina, corundum structure....
       (Ti
      Titanium

      Titanium is a chemical element with the symbol Ti and atomic number 22. Sometimes called the ?space age metal?, it has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver colour....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Tungsten(III) oxide
      Tungsten(III) oxide

      Tungsten oxide is a compound of tungsten and oxygen. It has been reported as being grown as a thin film by atomic layer deposition at temperatures between 140-240 ?C using W26 as a precursor....
       (W
      Tungsten

      Tungsten , also known as wolfram , is a chemical element that has the symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Vanadium(III) oxide
      Vanadium(III) oxide

      Vanadium trioxide is the chemical compound V2O3. It is prepared by reduction of vanadium pentoxide with hydrogen or carbon monoxide.It is a basic oxide dissolving in acids to give reducing vanadium solutions....
       (V
      Vanadium

      Vanadium is the chemical element with the symbol V and atomic number 23. It is a soft, silvery grey, ductile transition metal. The formation of an oxide layer stabilizes the metal against oxidation....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Ytterbium(III) oxide
      Ytterbium(III) oxide

      Ytterbium oxide is the chemical compound with the formula Yb2O3. It is one of the more commonly encountered compounds of ytterbium....
       (Yb
      Ytterbium

      Ytterbium is a chemical element with the symbol Yb and atomic number 70. A soft silvery metallic element, ytterbium is a Rare earth element of the lanthanide series and is found in the minerals gadolinite, monazite, and xenotime....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Yttrium(III) oxide
      Yttrium(III) oxide

      Yttrium oxide is yttrium2oxide3. It is an air-stable, colorless substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds....
       (Y
      Yttrium

      Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanoids and has historically been classified as a rare earth element....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)


  • Element in +4 oxidation state
    • Carbon dioxide
      Carbon dioxide

      Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
       (C
      Carbon

      Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Carbon trioxide
      Carbon trioxide

      File:Co3-geometries.pngCarbon trioxide is an unstable product of reactions between carbon dioxide and atomic oxygen . It is different from the carbonate ion ....
       (C
      Carbon

      Carbon is a chemical element with chemical symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalence?making four electrons available to form covalent bond chemical bonds....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Cerium(IV) oxide
      Cerium(IV) oxide

      Cerium oxide, also known as ceric oxide, ceria, cerium oxide or cerium dioxide, is a pale yellow-white powder with the chemical formula CeO2....
       (Ce
      Cerium

      Cerium is a chemical element with the symbol Ce and atomic number 58....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Chlorine dioxide
      Chlorine dioxide

      Chlorine dioxide is a chemical compound with the formula ClO2. This reddish-yellow gas crystallizes as orange crystals at -59 ?C. As one of several oxides of chlorine, it is a potent and useful oxidizing agent used in water treatment and in bleaching....
       (Cl
      Chlorine

      Chlorine...
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Chromium(IV) oxide
      Chromium(IV) oxide

      Chromium dioxide or chromium oxide is a chemical synthesis magnetism substance once widely used in magnetic tape emulsion. With the increasing popularity of compact disc and DVDs, the use of chromium oxide has declined....
       (Cr
      Chromium

      Chromium is a chemical element which has the symbol Cr and atomic number 24. It is a steely-gray, Lustre , hard metal that takes a high polish and has a high melting point....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Dinitrogen tetroxide
      Dinitrogen tetroxide

      Dinitrogen tetroxide is the chemical compound N2O4. It forms an Chemical equilibrium with nitrogen dioxide; some call this mixture dinitrogen tetroxide, some call it nitrogen dioxide....
       (N
      Nitrogen

      Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Germanium dioxide
      Germanium dioxide

      Germanium dioxide, also called germanium oxide and germania, is an inorganic compound, an oxide of germanium. Its chemical formula is GermaniumOxygen2....
       (Ge
      Germanium

      Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, greyish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Hafnium(IV) oxide
      Hafnium(IV) oxide

      Hafnium oxide is the inorganic compound with the chemical formula HafniumOxygen2. Also known as hafnia, this colourless solid is one of the most common and stable compounds of hafnium....
       (Hf
      Hafnium

      Hafnium is a chemical element with the element symbol Hf and atomic number 72. A lustre , silvery gray, tetravalence, transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Lead(IV) oxide (Pb
      Lead

      Lead is a main-group Chemical element with symbol Pb and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metal ....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Manganese(IV) oxide
      Manganese(IV) oxide

      Manganese oxide is the chemical compound MnO2, commonly called manganese dioxide. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese....
       (Mn
      Manganese

      Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Nitrogen dioxide
      Nitrogen dioxide

      Nitrogen dioxide is the chemical compound with the chemical formula NitrogenOxygen2. One of several nitrogen oxides, NO2 is an intermediate in the industrial synthesis of nitric acid, millions of tons of which are produced each year....
       (N
      Nitrogen

      Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Plutonium dioxide
      Plutonium dioxide

      Plutonium oxide is the chemical compound with the chemical formula PuO2. This high melting point solid is a principal compound of plutonium....
       (Pu
      Plutonium

      Plutonium is a rare transuranic radioactive chemical element. It is an actinide metal of silvery-white appearance that tarnishes when exposed to air, forming a dull coating when plutonium oxide....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Ruthenium(IV) oxide
      Ruthenium(IV) oxide

      Ruthenium oxide is a black chemical compound containing the rare metal ruthenium and oxygen. The most oftenused O2 catalyst is ruthenium oxide, however care must be taken since hydrates of this oxide exist....
       (Ru
      Ruthenium

      Ruthenium is a chemical element that has the symbol Ru and atomic number 44. A rare transition metal of the platinum group of the periodic table, ruthenium is found associated with platinum ores and used as a catalyst in some platinum alloys....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Selenium dioxide
      Selenium dioxide

      Selenium dioxide is the chemical compound with the chemical formula SeO2. This colorless solid is one of the most frequently encountered compounds of selenium....
       (Se
      Selenium

      Selenium is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Silicon dioxide
      Silicon dioxide

      The chemical compound 'silicon dioxide', also known as 'silica' , is an oxide of silicon with a chemical formula of and has been known for its hardness since antiquity....
       (Si
      Silicon

      Silicon is the most common metalloid. It is a chemical element, which has the symbol Si and atomic number 14. The atomic mass is 28.0855....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Sulfur dioxide
      Sulfur dioxide

      Sulfur dioxide is the chemical compound with the formula SO2. It is produced by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide....
       (S
      Sulfur

      Sulfur or sulphur is the chemical element that has the atomic number 16. It is denoted with the symbol S. It is an abundant Valence non-metal....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Tellurium dioxide
      Tellurium dioxide

      Tellurium dioxide is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite,?-TeO2, and the synthetic, colourless tetragonal , a-TeO2....
       (Te
      Tellurium

      Tellurium is a chemical element that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like tin, tellurium is chemically related to selenium and sulfur....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Thorium dioxide
      Thorium dioxide

      Thorium dioxide , also called thorium oxide is a white, crystalline powder. It was formerly known as thoria or thorina. It is produced mainly as a by-product of lanthanide and uranium production[1]....
       (O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Tin dioxide
      Tin dioxide

      Tin dioxide is the inorganic compound with the chemical formula SnO2. The mineral form of SnO2 is called cassiterite, and this is the main ore of tin....
       (Sn
      Tin

      Tin is a chemical element with the symbol Sn and atomic number 50. Tin is obtained chiefly from the mineral cassiterite, where it occurs as an oxide, SnO2....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Titanium dioxide
      Titanium dioxide

      Titanium dioxide, also known as titanium oxide or titania, is the naturally occurring oxide of titanium, chemical formula titaniumoxygen2....
       (Ti
      Titanium

      Titanium is a chemical element with the symbol Ti and atomic number 22. Sometimes called the ?space age metal?, it has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver colour....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Tungsten(IV) oxide
      Tungsten(IV) oxide

      Tungsten dioxide is the chemical compound with the chemical formula WO2. The bronze-colored solid crystallizes in a monoclinic cell....
       (W
      Tungsten

      Tungsten , also known as wolfram , is a chemical element that has the symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Uranium dioxide
      Uranium dioxide

      Uranium dioxide or uranium oxide , also known as urania or uranic oxide, is an oxide of uranium and a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite....
       (U
      Uranium

      Uranium is a silvery-gray metallic chemical element in the actinide series of the periodic table that has the chemical symbol U and atomic number 92....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Vanadium(IV) oxide
      Vanadium(IV) oxide

      Vanadium oxide is the chemical compound VO2. It is formed in the contact process from V2O5, which acts as a catalyst....
       (V
      Vanadium

      Vanadium is the chemical element with the symbol V and atomic number 23. It is a soft, silvery grey, ductile transition metal. The formation of an oxide layer stabilizes the metal against oxidation....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)
    • Zirconium dioxide
      Zirconium dioxide

      Zirconium dioxide , sometimes known as zirconia, is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the rare mineral, baddeleyite....
       (Zr
      Zirconium

      Zirconium is a chemical element with the symbol Zr and atomic number 40. It is a lustrous, gray-white, strong transition metal that resembles titanium....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      2)


  • Element in +5 oxidation state
    • Antimony pentoxide
      Antimony pentoxide

      Antimony pentoxide is a chemical compound of antimony and oxygen that is used in a variety of industrial processes. It finds use as a Flame retardant in Acrylonitrile butadiene styrene and other plastics, a flocculant in the production of titanium dioxide and is sometimes used in the production of glass, paint and adhesives....
       (Sb
      Antimony

      Antimony is a chemical element with the symbol Sb and atomic number 51. A metalloid, antimony has four allotropy forms. The stable form of antimony is a blue-white metalloid....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)
    • Arsenic pentoxide
      Arsenic pentoxide

      Arsenic pentoxide, As2O5, is an important commercial compound of arsenic. Its usage with respect to arsenic chemistry, as well as its toxicology are similar to arsenic trioxide, As2O3....
       (As
      Arsenic

      Arsenic is a well-known chemical element that has the symbol As and atomic number 33. Arsenic was first documented by Albertus Magnus in 1250....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)
    • Dinitrogen pentoxide
      Dinitrogen pentoxide

      Dinitrogen pentoxide is the chemical compound with the chemical formula N2O5. Also known as nitrogen pentoxide, N2O5 is one of the binary nitrogen oxygens, a family of compounds that only contain nitrogen and oxygen....
       (N
      Nitrogen

      Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)
    • Niobium pentoxide
      Niobium pentoxide

      Niobium pentoxide, is the chemical compound with the chemical formula Niobium2oxide5. It is used mainly in the production of capacitors, lithium niobate, and optical glass.....
    • Phosphorus pentoxide
      Phosphorus pentoxide

      Phosphorus pentoxide is a chemical compound with formula Phosphorus2Oxygen5. This white crystalline solid is the anhydride of phosphoric acid....
       (P
      Phosphorus

      Phosphorus is the chemical element that has the symbol P and atomic number 15. The name comes from the and . A Valency nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate minerals....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)
    • Tantalum pentoxide
      Tantalum pentoxide

      Tantalum pentoxide is Ta2O5, also known as tantalum oxide. Both orthorhombic and hexagonal crystal system phases are known....
       (Ta
      Tantalum

      Tantalum is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue-grey, lustre transition metal, tantalum is highly corrosion-resistant and occurs naturally in the mineral tantalite, always together with the chemically similar niobium....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)
    • Vanadium(V) oxide
      Vanadium(V) oxide

      Vanadium oxide is the chemical compound with the chemical formula V2O5. Commonly known as vanadium pentoxide, this orange solid is the most important Inorganic compound of vanadium....
       (V
      Vanadium

      Vanadium is the chemical element with the symbol V and atomic number 23. It is a soft, silvery grey, ductile transition metal. The formation of an oxide layer stabilizes the metal against oxidation....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      5)


  • Element in +6 oxidation state
    • Chromium trioxide
      Chromium trioxide

      The acid anhydride of chromic acid, CrO3, is chromium trioxide or chromium oxide; industrially, this compound is sometimes sold as "chromic acid"....
       (Cr
      Chromium

      Chromium is a chemical element which has the symbol Cr and atomic number 24. It is a steely-gray, Lustre , hard metal that takes a high polish and has a high melting point....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Molybdenum(VI) oxide
      Molybdenum(VI) oxide

      Molybdenum trioxide is chemical compound with the chemical formula MoO3. This compound is produced on the largest scale of any molybdenum compound....
       (Mo
      Molybdenum

      Molybdenum , is a Group 6 element chemical element with the symbol Mo and atomic number 42. It has the List of elements by melting point melting point of any element....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Rhenium trioxide
      Rhenium trioxide

      Rhenium trioxide is a red solid with a metallic lustre. It is the only stable oxide of the Group 7 elements ....
       (Re
      Rhenium

      Rhenium is a chemical element with the symbol Re and atomic number 75. A rare silvery-white, heavy, polyvalent transition metal, rhenium resembles manganese chemically, and is used in some alloys....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Selenium trioxide
      Selenium trioxide

      Selenium trioxide is a chemical compound used in the manufacture of photoelectric cells and solar energy devices.A laboratory preparation is to react anhydrous K2SeO4 and SO3....
       (Se
      Selenium

      Selenium is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Sulphur trioxide (S
      Sulfur

      Sulfur or sulphur is the chemical element that has the atomic number 16. It is denoted with the symbol S. It is an abundant Valence non-metal....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Tellurium trioxide
      Tellurium trioxide

      Tellurium trioxide is an inorganic chemical compound of tellurium and oxygen. Tellurium is in the +6 oxidation state. There are two forms, yellow-red a-TeO3 and grey, rhombohedral, ?-TeO3 which is less reactive....
       (Te
      Tellurium

      Tellurium is a chemical element that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like tin, tellurium is chemically related to selenium and sulfur....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Tungsten trioxide
      Tungsten trioxide

      Tungsten oxide, also known as tungsten trioxide or tungstic anhydride, WO3, is a chemical compound containing oxygen and the transition metal tungsten....
       (W
      Tungsten

      Tungsten , also known as wolfram , is a chemical element that has the symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Uranium trioxide
      Uranium trioxide

      Uranium trioxide , also called uranyl oxide, uranium oxide, and uranic oxide, is the hexavalent oxide of uranium. The solid may be obtained by heating uranyl nitrate to 400 ?C....
       (U
      Uranium

      Uranium is a silvery-gray metallic chemical element in the actinide series of the periodic table that has the chemical symbol U and atomic number 92....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)
    • Xenon trioxide
      Xenon trioxide

      Xenon trioxide is an unstable compound of xenon in its +6 oxidation state. It is a very powerful oxidizing agent, and liberates oxygen from water slowly, accelerated by exposure to sunlight....
       (Xe
      Xenon

      Xenon is a chemical element represented by the chemical symbol Xe. Its atomic number is 54. A colorless, heavy, odorless noble gas, xenon occurs in the Earth's atmosphere in trace amounts....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      3)


  • Element in +7 oxidation state
    • Dichlorine heptoxide
      Dichlorine heptoxide

      Dichlorine heptoxide is the chemical compound with the Chemical formula Cl2O7. This chlorine oxide is the acid anhydride of perchloric acid....
       (Cl
      Chlorine

      Chlorine...
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      7)
    • Manganese(VII) oxide
      Manganese(VII) oxide

      Manganese oxide is the chemical compound with the chemical formula Mn2O7. This volatile liquid is highly reactive and more often discussed than observed or intentionally prepared....
       (Mn
      Manganese

      Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      7)
    • Rhenium(VII) oxide
      Rhenium(VII) oxide

      Rhenium oxide is the chemical compound with the formula RheniumOxygen. It is the anhydride of the hypothetical acid . Perrhenic acid, Re2O7·2H2O, however is closely related structurally to Re2O7....
       (Re
      Rhenium

      Rhenium is a chemical element with the symbol Re and atomic number 75. A rare silvery-white, heavy, polyvalent transition metal, rhenium resembles manganese chemically, and is used in some alloys....
      2O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      7)
    • Technetium(VII) oxide


  • Element in +8 oxidation state
    • Osmium tetroxide (Os
      Osmium

      Osmium is a chemical element that has the symbol Os and atomic number 76. Osmium is a hard, brittle, blue-gray or blue-black transition metal in the platinum family, and is the densest natural element....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Ruthenium tetroxide
      Ruthenium tetroxide

      Ruthenium tetroxide is a yellow, diamagnetism tetrahedral molecular geometry ruthenium compound. As expected for a charge-neutral symmetrical oxide, it is quite volatile....
       (Ru
      Ruthenium

      Ruthenium is a chemical element that has the symbol Ru and atomic number 44. A rare transition metal of the platinum group of the periodic table, ruthenium is found associated with platinum ores and used as a catalyst in some platinum alloys....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)
    • Xenon tetroxide
      Xenon tetroxide

      Xenon tetroxide is a yellow crystalline solid that is stable below -35.9 ?Celsius. The xenon atom has an oxidation state of +8 and oxygen of -2....
       (Xe
      Xenon

      Xenon is a chemical element represented by the chemical symbol Xe. Its atomic number is 54. A colorless, heavy, odorless noble gas, xenon occurs in the Earth's atmosphere in trace amounts....
      O
      Oxygen

      Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
      4)


See also

  • Other oxygen ions ozonide
    Ozonide

    Ozonide is an unstable, reactive polyatomic ion anion O3−, derived from ozone, or an organic compound similar to organic peroxide formed by a reaction of ozone with an unsaturated compound....
    , O3-, superoxide
    Superoxide

    Superoxide is the anion O2−. It is important as the product of the one-electron reduction of dioxygen, which occurs widely in nature....
    , O2-, peroxide
    Peroxide

    A peroxide is a compound containing an oxygen-oxygen chemical bond. The simplest stable peroxide is hydrogen peroxide. Superoxides, dioxygenyls, ozones and ozonides compound are considered separately....
    , O22- and dioxygenyl
    Dioxygenyl

    The dioxygenyl ion, O2+, is a rarely-encountered oxycation in which both oxygen atoms have an oxidation state of +?. It is formally derived from oxygen by the removal of an electron:The energy change for this process is called the ionization energy of the oxygen molecule....
    , O2+.
  • Suboxide
    Suboxide

    Suboxides are a class of oxides wherein the electropositive element is in excess relative to the ?normal? oxides. When the electropositive element is a metal, the compounds are sometimes referred to as ?metal-rich?....


  • See :Category:Oxides for a list of oxides.