Atomic number 45
Rhodium
Transition metal
Quick facts
- Atomic mass
- 102.91
- Group
- 9
- Period
- 5
- State (STP)
- solid
- Electronegativity
- 2.28
- Common ox. states
- +3
Properties
Electron configuration
[Kr] 4d⁸ 5s¹
- Ionization energy
- 719.7 kJ/mol
- Electron affinity
- 109.7 kJ/mol
- Melting point
- 2237.00 K (1963.8 °C)
- Boiling point
- 3968.00 K (3694.8 °C)
How it bonds
Rhodium most commonly shows +3. Extremely corrosion-resistant and reflective — the catalyst metal in your car's catalytic converter (with platinum and palladium) that converts NOx back to N₂.