27Co
Cobalt
Transition metal
Properties of Cobalt
- Atomic number (Z)
- 27
- Symbol
- Co
- Name
- Cobalt
- Atomic mass
- 58.933 u
- Period
- 4
- Group
- 9
- Family
- Transition metals
- Classification
- Transition metal
- Electron configuration
- [Ar] 3d⁷ 4s²
About Cobalt
Cobalt is a chemical element with symbol Co and atomic number 27 (atomic mass of about 58.933 u). It is classified as a transition metal on the periodic table.
On the periodic table, Cobalt is located in period 4, in group 9, belonging to the transition metals family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Cobalt is [Ar] 3d⁷ 4s², which determines how it forms chemical bonds and takes part in reactions.