Rhenium |
| Symbol | Re |
|---|---|
| Latin name | Rhenium |
| Atomic number | 75 |
| Period | 6 |
| Element category | Transition elements |
| Relative atomic mass | 186.207 |
| Group | VII.B |
| Electronegativity | 1.9 |
| Oxidation numbers | 2, 3, 4, 6, 7 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d5 6s2 |
| Density [g/cm3] | 21.03 |
| State | Solid |
| Melting point [°C] | 3180 |
| Boiling point [°C] | 5630 |
| Atomic radius [pm] | 188 |
| Covalent radius [pm] | 159 |
| Thermal conductivity [W m-1K-1] | 47.9 |
| Heat capacity [J K-1g-1] | 0.137 |
| Discovery | 1925 |
| Hardness [Mohs scale] | 7.0 |
| Vickers hardness [MPa] | 2450 |
| Brinell hardness [MPa] | 1320 |
| Young's modulus [GPa] | 463 |
| Electrical conductivity [S m-1] | 5.6 · 106 |
| Shear modulus [GPa] | 178 |
| 1.st ionization energy [eV] | 7.88 |
| Stable isotopes | 2 |
| Unstable isotopes | 20 |