Cobalt is a transition metal that is widely used in alloys and for producing hard metals. It also has an important role in the biological system, especially in vitamin B12.
| Property | Value |
|---|---|
| Atomic Number | 27 |
| Symbol | Co |
| Atomic Mass | 58.933 u |
| Electron Configuration | 1s2 2s2 2p6 3s2 3p6 3d7 4s2 |
| State at Room Temperature | Solid |