| name | Osmium |
| latin | Osmium |
| french | Osmium |
| german | Osmium |
| symbol | Os |
| proton number | 76 |
| atomic weight | 190.23 |
| Pauling electronegativity | 2.2 |
| electronic configuration | [Xe] 4f145d66s2 1s22s22p63s23p63d104s24p64d105s25p64f145d66s2 |
| melting point | 3306 K, 3033°C, 5491°F |
| boiling point | 5285 K, 5012°C, 9053°F |
| group | 8 |
| period | 6 |
| state (by 20°C) | solid |
| oxidation states | +3, +4, +6, +8 |
| Year of discovery | Discoverer |
| 1804 | Smithson Tennant (1761-1815) |