| Element | Cobalt | Symbol | Co |
| Atomic Number | 27 | Molar Mass | 58.93 gmol-1 |
| Electron Configuration | [Ar]3d74s2 | Normal State | solid metal |
| Density @STP | 8.8 g cm-3 | Melting Point | 1495oC |
| Boiling Point | 2927oC | Stable Isotopes | 59Co |
| Atomic Radius | 125 pm | Ionic Radius | 64 (3+) pm |
| Electronegativity (Pauling) | 1.88 | Ionization Energy (1st) | 760 kJ mol-1 |
| Ionization Energy (2nd) | 1646 kJ mol-1 | Ionization Energy (3rd) | 3232 kJ mol-1 |
| Molar Heat Capacity | 24.8 J K-1mol-1 | Standard Molar Entropy | 30 J K-1mol-1 |
| Enthalpy of Fusion | 15.2 kJ mol-1 | Enthalpy of Vapourization | 382.4 kJ mol-1 |