20Ca
Calcium
Alkaline earth metal
Properties of Calcium
- Atomic number (Z)
- 20
- Symbol
- Ca
- Name
- Calcium
- Atomic mass
- 40.078 u
- Period
- 4
- Group
- 2
- Family
- Alkaline earth metals
- Classification
- Alkaline earth metal
- Electron configuration
- [Ar] 4s²
About Calcium
Calcium is a chemical element with symbol Ca and atomic number 20 (atomic mass of about 40.078 u). It is classified as a alkaline earth metal on the periodic table.
On the periodic table, Calcium is located in period 4, in group 2, belonging to the alkaline earth metals family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Calcium is [Ar] 4s², which determines how it forms chemical bonds and takes part in reactions.