Rhodium |
| Symbol | Rh |
|---|---|
| Latin name | Rhodium |
| Atomic number | 45 |
| Period | 5 |
| Element category | Transition elements |
| Relative atomic mass | 102.90550 |
| Group | VIII.B |
| Electronegativity | 2.2 |
| Oxidation numbers | 2, 3, 4, 5 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d8 5s1 |
| Density [g/cm3] | 12.45 |
| State | Solid |
| Melting point [°C] | 1963 |
| Boiling point [°C] | 3800 |
| Atomic radius [pm] | 173 |
| Covalent radius [pm] | 135 |
| Thermal conductivity [W m-1K-1] | 150 |
| Heat capacity [J K-1g-1] | 0.242 |
| Discovery | 1803 |
| Hardness [Mohs scale] | 6.0 |
| Vickers hardness [MPa] | 1246 |
| Brinell hardness [MPa] | 1100 |
| Young's modulus [GPa] | 275 |
| Electrical conductivity [S m-1] | 2.3 · 107 |
| Shear modulus [GPa] | 150 |
| 1.st ionization energy [eV] | 7.4589 |
| 2.nd ionization energy [eV] | 18.08 |
| 3.rd ionization energy [eV] | 31.06 |
| Stable isotopes | 1 |
| Unstable isotopes | 19 |