Stable isotope Rhodium (Rh)

Isotope Z(p) N(n) Atomic Mass Natural Abundance Nuclear Spin
Rh-103 45 58 102.905504 100.00% 1/2-
 

Properties of Rhodium

Name Rhodium
Symbol Rh
Atomic number 45
Atomic weight 102.906
Standard state Solid at 298 °K
CAS Registry ID 7440-16-6
Group in periodic table 9
Group name Precious metal or platinum group metal
Period in periodic table 5
Block in periodic table d-block
Color Silvery white metallic
Classification Metallic
Melting point 1964 °C
Boiling point 3727 °C
Vaporization point 3695 °C
Thermal conductivity 150 W/(m·K) at 298.2 °K
Electrical resistivity 4.51 µΩ·cm at 20 °C
Electronegativity 2.2
Specific heat 0.24 kJ/kg K
Heat of vaporization 495 kJ·mol-1
Heat of fusion 21.7 kJ·mol-1
Density of liquid 10.7 g/cm3 at 1964 °C
Density of solid 12.45 g/cm3
Electron configuration [Kr]4d85s1
Atomic radius 1.34 Å
Ionic radius Rh3+: 0.67 Å (coordination number 6)
Oxidation states +2, +3, +4, +5, +6
Most stable oxidation state +3