Co
27 transition metal Generated with AI
Cobalt
Symbol Co
Atomic Mass 58.9331944
Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt in the Earth’s crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.
Properties
- Phase: Solid
- Density: 8.9 g/cm³
- Melting Point: 1768 K
- Boiling Point: 3200 K