Cobalt
Electron Configuration
|
General Properties
| Atomic Symbol | Co |
| Atomic Weight | 58.9332 g/mol |
| Element Number | 27 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1735 |
| Discoverer | Brandt |
Physical Properties
| Oxidation States | 2, 3 |
| Boiling Point | 3143 K |
| Melting Point | 1768 K |
| Density | 8.90 g/cm³ |
| Electron Configuration | [Ar]3d7,4s2 |
| Acid/Base Properties | Amphoteric |
| Crystal Structure | Hexagonal |
| Electronegativity | 1.88 |
| Heat of Vaporization | 373.3 kJ/mol |
| Heat of Fusion | 16.19 kJ/mol |
| Electrical Conductivity | 17.9 10^6omg-¹cm-¹ |
| Thermal Conductivity | 100 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.421 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 7.86 |
| Atomic Volume | 6.70 cm³/mol |
| Atomic Radius | 1.25 Å |
| Covalent Radius | 1.16 Å |
| Synthetic | No |