Cobalt (Co)
A fascinating transition metal element.
Cobalt is element 27 on the periodic table.
Element properties
- Atomic number
- 27
- Symbol
- Co
- Atomic mass
- 58.933 u
- Category
- Transition Metal
- Period
- 4
- Group
- 9
- Block
- d
- State
- Solid
- Electron configuration
- [Ar] 3d7 4s2
- Electronegativity (Pauling)
- 1.88
- Density
- 8.9 g/cm³
- Melting point
- 1495 °C
- Boiling point
- 2927 °C