| name | Cobalt |
| latin | Cobaltum |
| french | Cobalt |
| german | Cobalt |
| symbol | Co |
| proton number | 27 |
| atomic weight | 58.9332 |
| Pauling electronegativity | 1.88 |
| electronic configuration | [Ar] 3d74s2 1s22s22p63s23p63d74s2 |
| melting point | 1768 K, 1495°C, 2723°F |
| boiling point | 3200 K, 2927°C, 5300°F |
| group | 9 |
| period | 4 |
| state (by 20°C) | solid |
| oxidation states | +2, +3 |
| Year of discovery | Discoverer |
| 1735 | Georg Brandt |