Rh - Rhodium

This transition element was discovered in 1803 by Wollaston in London.

Atomic number - 45 Density g/mL 12 .4
Atomic weight u 102 .9055 Melting point K 2236
Bonding radius A 1 .25 Boiling point K 3970
Atomic radius A 1 .83 Heat of vaporization kJ/mol 493
Ionization Potential V 7 .46 Heat of fusion kJ/mol 21 .5
Electronegativity - 2 .28 Specific heat J/gK 0 .242
The oxide is amphoteric.
Crystal are face centered cubic.

Electron config. : [Kr] 4d8 5s1


Isotopes of Rh: Click mass number for decay process, product for element page.


093

EC,8.100 MeV
Ru-93
92.925710
094
25.8 sec
EC,9.600 MeV
Ru-94
93.921738
095
5.02 min
EC,5.110 MeV
Ru-95
94.915898
096
9.90 min
EC,6.446 MeV
Ru-96
95.914524
097
30.7 min
EC,3.520 MeV
Ru-97
96.911346
098
8.7 min
EC,5.057 MeV
Ru-98
97.910716
099
16.1 da
EC,2.103 MeV
Ru-99
98.908195
100
20.8 hr
EC,3.630 MeV
Ru-100
99.908115
101
3.3 yr
EC,1.614 MeV
Ru-101
100.90616
101a
4.34 da
EC,1.614 MeV
Ru-101
100.90633
102
207 da
B-/EC,2.323
Pd-102/Ru-102
101.90684
102a
2.9 yr
EC,2.464 MeV
Ru-102
101.90699
103 100%

Stable

102.90550
104
42.3 sec
B-/EC,2.441
Pd-104/Ru-104
103.90665
105
35.36 hr
B-,1.917 MeV
Pd-105
104.90569
106
29.80 sec
B-,3.541 MeV
Pd-106
105.90728
107
21.7 min
B-,1.511 MeV
Pd-107
106.90675
108
16.8 sec
B-,4.510 MeV
Pd-108
107.90872
109
80 sec
B-,2.591 MeV
Pd-109
108.90873
110
3.2 sec
B-,5.400 MeV
Pd-110
109.91094
111
11 sec
B-,3.740 MeV
Pd-111
110.91165
112
2.1 sec
B-,6.800 MeV
Pd-112
111.91465
113
2.80 sec
B-,4.900 MeV
Pd-113
112.91540
114
1.85 sec
B-,7.900 MeV
Pd-114
113.91884
115
0.99 sec
B-,6.000 MeV
Pd-115
114.92012
116
0.68 sec
B-,8.900 MeV
Pd-116
115.92367
117
0.44 sec
B-,7.000 MeV
Pd-117
116.92538
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass