Ruthenium vs Osmium
Pick up to 3 elements and see how they stack up.
| Property | Ruthenium | Osmium |
|---|---|---|
| Atomic number | 44 | 76 |
| Atomic mass | 101.07 | 190.23 |
| Electronegativity | 2.2 | 2.2 |
| Melting point | 2,607 K (2,333.8 °C) | 3,306 K (3,032.8 °C) |
| Boiling point | 4,423 K (4,149.8 °C) | 5,285 K (5,011.8 °C) |
| Density | 12.45 g/cm³ | 22.59 g/cm³ |
| Atomic radius | 207 pm | 216 pm |
| Ionization energy | 7.361 eV | 8.7 eV |
| Discovered | 1844 | 1803 |
| Category | Transition metal | Transition metal |
| State at room temp. | Solid | Solid |
| Block | d | d |
| Group | 8 | 8 |
| Period | 5 | 6 |
| Valence electrons | 1 | 2 |
| Common charges | +3 | +3, +4 |
| Electron configuration | [Kr] 4d7 5s1 | [Xe] 4f14 5d6 6s2 |