Rhenium vs Osmium
Pick up to 3 elements and see how they stack up.
| Property | Rhenium | Osmium |
|---|---|---|
| Atomic number | 75 | 76 |
| Atomic mass | 186.21 | 190.23 |
| Electronegativity | 1.9 | 2.2 |
| Melting point | 3,459 K (3,185.8 °C) | 3,306 K (3,032.8 °C) |
| Boiling point | 5,869 K (5,595.8 °C) | 5,285 K (5,011.8 °C) |
| Density | 21.02 g/cm³ | 22.59 g/cm³ |
| Atomic radius | 217 pm | 216 pm |
| Ionization energy | 7.88 eV | 8.7 eV |
| Discovered | 1925 | 1803 |
| Category | Transition metal | Transition metal |
| State at room temp. | Solid | Solid |
| Block | d | d |
| Group | 7 | 8 |
| Period | 6 | 6 |
| Valence electrons | 2 | 2 |
| Common charges | +4, +6, +7 | +3, +4 |
| Electron configuration | [Xe] 4f14 5d5 6s2 | [Xe] 4f14 5d6 6s2 |