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Isotopes of rhodium

 

 
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Isotopes of rhodium
 
 
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Naturally occurring rhodium
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....
 (Rh) is composed of only one stable isotope
Isotope

Isotopes are any of the different types of atoms of the same chemical element, each having a different atomic mass . Isotopes of an element have atomic nucleus with the same number of protons but different numbers of neutron....
, 103Rh. The most stable radioisotopes are 101Rh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 3.3 years, 102Rh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 207 days, 102mRh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 2.9 years, and 99Rh with a half-life of 16.1 days. Twenty other radioisotopes have been characterized with atomic weight
Atomic weight

Atomic weight is a Dimensionless quantity physical quantity, the ratio of the average mass of atoms of an chemical element to 1/12 of the mass of an atom of carbon-12....
s ranging from 92.926 u
Atomic mass unit

The unified atomic mass unit , or dalton or, sometimes, universal mass unit, is a Units of measurement of mass used to express atomic weight and molecular masses....
 (93Rh) to 116.925 u (117Rh).






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Encyclopedia


Naturally occurring rhodium
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....
 (Rh) is composed of only one stable isotope
Isotope

Isotopes are any of the different types of atoms of the same chemical element, each having a different atomic mass . Isotopes of an element have atomic nucleus with the same number of protons but different numbers of neutron....
, 103Rh. The most stable radioisotopes are 101Rh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 3.3 years, 102Rh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 207 days, 102mRh with a half-life
Half-life

The half-life of a quantity whose value decreases with time is the interval required for the quantity to decay to half of its initial value. The concept originated in describing how long it takes atoms to undergo radioactive decay but also applies in a wide variety of other situations....
 of 2.9 years, and 99Rh with a half-life of 16.1 days. Twenty other radioisotopes have been characterized with atomic weight
Atomic weight

Atomic weight is a Dimensionless quantity physical quantity, the ratio of the average mass of atoms of an chemical element to 1/12 of the mass of an atom of carbon-12....
s ranging from 92.926 u
Atomic mass unit

The unified atomic mass unit , or dalton or, sometimes, universal mass unit, is a Units of measurement of mass used to express atomic weight and molecular masses....
 (93Rh) to 116.925 u (117Rh). Most of these have half-lifes that are less than an hour except 100Rh (half-life: 20.8 hours) and 105Rh (half-life: 35.36 hours). There are also numerous meta states with the most stable being 102mRh (0.141 MeV) with a half-life of about 207 days and 101mRh (0.157 MeV) with a half-life of 4.34 days. See isotopes of rhodium
Isotopes of rhodium

Naturally occurring rhodium is composed of only one stable isotope, 103Rh. The most stable radioisotopes are 101Rh with a half-life of 3.3 years, 102Rh with a half-life of 207 days, 102mRh with a half-life of 2.9 years, and 99Rh with a half-life of 16.1 days....
.

The primary decay mode before the only stable isotope, 103Rh, is electron capture
Electron capture

Electron capture is a decay mode for isotopes that will occur when there are too many protons in the atomic nucleus of an atom and insufficient energy to emit a positron; however, it continues to be a viable decay mode for radioactive isotopes that can decay by positron emission....
 and the primary mode after is beta emission. The primary decay product
Decay product

In nuclear physics, a decay product, also known as a daughter product, daughter isotope or daughter nuclide, is a nuclide resulting from the radioactive decay of a parent isotope or precursor nuclide....
 before 103Rh is ruthenium
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....
 and the primary product after is palladium
Palladium

Palladium is a rare and lustrous silvery-white metal that was discovered in 1803 by William Hyde Wollaston, who named it palladium after the 2 Pallas, which in turn, was named after the epithet of the Greek mythology goddess Athena, acquired by her when she slew Athena#Pallas_Athena....
.
Standard atomic mass: 102.90550(2) u

Table

nuclide
symbol		 Z(p
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+....
)		 N(n
Neutron

The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.Neutrons are usually found in atomic nucleus....
)		  
isotopic mass (u)
 		 half-life nuclear
spin		 representative
isotopic
composition
(mole fraction)		 range of natural
variation
(mole fraction)
excitation energy
89Rh 45 44 88.94884(48)# 10# ms [>1.5 µs] 7/2+#  
90Rh 45 45 89.94287(54)# 15(7) ms [12(+9-4) ms] 0+#  
90mRh 0(500)# keV 1.1(3) s [1.0(+3-2) s 9+#  
91Rh 45 46 90.93655(43)# 1.74(14) s 7/2+#  
91mRh  1.46(11) s (1/2-)  
92Rh 45 47 91.93198(43)# 4.3(13) s (6+)  
92mRh  4.66(25) s [2.9(+15-8) s] (>=6+)  
93Rh 45 48 92.92574(43)# 11.9(7) s 9/2+#  
94Rh 45 49 93.92170(48)# 70.6(6) s (2+,4+)  
94mRh 300(200)# keV 25.8(2) s (8+)  
95Rh 45 50 94.91590(16) 5.02(10) min (9/2)+  
95mRh 543.3(3) keV 1.96(4) min (1/2)-  
96Rh 45 51 95.914461(14) 9.90(10) min (6+)  
96mRh 52.0(1) keV 1.51(2) min (3+)  
97Rh 45 52 96.91134(4) 30.7(6) min 9/2+  
97mRh 258.85(17) keV 46.2(16) min 1/2-  
98Rh 45 53 97.910708(13) 8.72(12) min (2)+  
98mRh 60(50)# keV 3.6(2) min (5+)  
99Rh 45 54 98.908132(8) 16.1(2) d 1/2-  
99mRh 64.3(4) keV 4.7(1) h 9/2+  
100Rh 45 55 99.908122(20) 20.8(1) h 1-  
100m1Rh 107.6(2) keV 4.6(2) min (5+)  
100m2Rh 74.78(2) keV 214.0(20) ns (2)+  
100m3Rh 112.0+X keV 130(10) ns (7+)  
101Rh 45 56 100.906164(18) 3.3(3) a 1/2-  
101mRh 157.32(4) keV 4.34(1) d 9/2+  
102Rh 45 57 101.906843(5) 207.0(15) d (1-,2-)  
102mRh 140.75(8) keV 3.742(10) a 6+  
103Rh 45 58 102.905504(3) STABLE 1/2- 1.0000 
103mRh 39.756(6) keV 56.114(9) min 7/2+  
104Rh 45 59 103.906656(3) 42.3(4) s 1+  
104mRh 128.967(4) keV 4.34(3) min 5+  
105Rh 45 60 104.905694(4) 35.36(6) h 7/2+  
105mRh 129.781(4) keV 42.9(3) s 1/2-  
106Rh 45 61 105.907287(8) 29.80(8) s 1+  
106mRh 136(12) keV 131(2) min (6)+  
107Rh 45 62 106.906748(13) 21.7(4) min 7/2+  
107mRh 268.36(4) keV >10 µs 1/2-  
108Rh 45 63 107.90873(11) 16.8(5) s 1+  
108mRh -60(110) keV 6.0(3) min (5)(+#)  
109Rh 45 64 108.908737(13) 80(2) s 7/2+  
110Rh 45 65 109.91114(5) 28.5(15) s (>3)(+#)  
110mRh -60(50) keV 3.2(2) s 1+  
111Rh 45 66 110.91159(3) 11(1) s (7/2+)  
112Rh 45 67 111.91439(6) 3.45(37) s 1+  
112mRh 330(70) keV 6.73(15) s (4,5,6)  
113Rh 45 68 112.91553(5) 2.80(12) s (7/2+)  
114Rh 45 69 113.91881(12) 1.85(5) s 1+  
114mRh 200(150)# keV 1.85(5) s (4,5)  
115Rh 45 70 114.92033(9) 0.99(5) s (7/2+)#  
116Rh 45 71 115.92406(15) 0.68(6) s 1+  
116mRh 200(150)# keV 570(50) ms (6-)  
117Rh 45 72 116.92598(54)# 0.44(4) s (7/2+)#  
118Rh 45 73 117.93007(54)# 310(30) ms (4-10)(+#)  
119Rh 45 74 118.93211(64)# 300# ms [>300 ns] 7/2+#  
120Rh 45 75 119.93641(64)# 200# ms [>300 ns]   
121Rh 45 76 120.93872(97)# 100# ms [>300 ns] 7/2+#  
122Rh 45 77 121.94321(75)# 50# ms [>300 ns]