Ion

An ion is an atom Atom

In chemistry [i] and physics [i], an atom is the smallest possible particle of a chemical element [i] t ... 

 or group of atoms that normally are electrically neutral and achieve their status as an ion by loss of an electron. The simplest ions are the proton Proton

In physics [i], the proton is a subatomic particle [i] with an electric charge [i] of one positive fundamental unit [i] ... 

 , and alpha particle Alpha particle

Alpha particles are a highly ionizing [i] form of particle radiation [i] which have low pene ... 

  . A negatively charged ion, which has more electron Electron

The electron is a fundamental [i] subatomic particle [i] that carries an electric charge [i] ... 

s in its electron shell Electron shell

In atomic physics [i], an electron shell, also known as a main energy level, is a group of atomic orbital [i] ... 

s than it has proton Proton

In physics [i], the proton is a subatomic particle [i] with an electric charge [i] of one positive fundamental unit [i] ... 

s in its nuclei Atomic nucleus

The nucleus of an atom [i] is the very dense region in its center consisting of proton [i]s and neutron [i] ... 

, is known as an anion , for it is attracted to anode Anode

An anode is the electrode [i] in a device that electrons flow out of to return to the circuit. ... 

s; a positively-charged ion, which has fewer electrons than protons, is known as a cation , for it is attracted t

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Timeline

1941   Ives and Stilwell prove that ions radiate at frequencies affected by their motion.

Encyclopedia

An ion is an atom Atom

In chemistry [i] and physics [i], an atom is the smallest possible particle of a chemical element [i] t ... 

 or group of atoms that normally are electrically neutral and achieve their status as an ion by loss of an electron. The simplest ions are the proton Proton

In physics [i], the proton is a subatomic particle [i] with an electric charge [i] of one positive fundamental unit [i] ... 

 , and alpha particle Alpha particle

Alpha particles are a highly ionizing [i] form of particle radiation [i] which have low pene... 

  . A negatively charged ion, which has more electron Electron

The electron is a fundamental [i] subatomic particle [i] that carries an electric charge [i]... 

s in its electron shell Electron shell

In atomic physics [i], an electron shell, also known as a main energy level, is a group of atomic orbital [i] ... 

s than it has proton Proton

In physics [i], the proton is a subatomic particle [i] with an electric charge [i] of one positive fundamental unit [i] ... 

s in its nuclei Atomic nucleus

The nucleus of an atom [i] is the very dense region in its center consisting of proton [i]s and neutron [i] ... 

, is known as an anion , for it is attracted to anode Anode

An anode is the electrode [i] in a device that electrons flow out of to return to the circuit. ... 

s; a positively-charged ion, which has fewer electrons than protons, is known as a cation , for it is attracted t

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