45 Rh
Transition metal
Rhodium
Most expensive precious metal.
Properties of Rhodium
- Atomic number (Z)
- 45
- Symbol
- Rh
- Atomic mass
- 102.91 g/mol
- Category
- Transition metal
- Group
- 9
- Period
- 5
- Electron configuration
- [Kr] 4d⁸ 5s¹
- Electronegativity (Pauling)
- 2.28
- Atomic radius
- 173 pm
- First ionization energy
- 720 kJ/mol
- Melting point
- 2237 K (1963.8 °C)
- Boiling point
- 3968 K (3694.8 °C)
- Density
- 12.41 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1803