| Attribute | Value |
|---|---|
| Symbol | Co |
| Standard state | Solid |
| Atomic mass | 58.93319 u |
| Electron configuration | [Ar]4s²3d⁷ |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.88 |
| Atomic radius (van der waals) | 192 pm |
| Ionization energy | 7.881 eV |
| Electron affinity | 0.661 eV |
| Melting point | 1768 K |
| Boiling point | 3200 K |
| Density | 8.86 g/cm³ |
| Atomic number | 27 |
| Group name | Transition metal |
| Discovered | 1735 year |