Calcium
Calcium (Ca) is a chemical element belonging to the category Alkaline earth metal, with atomic number 20 and atomic mass 40.0780 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Calcium
- Symbol: Ca
- Atomic number: 20
- Atomic mass: 40.0780 u
Position in the periodic table
- Group: 2
- Period: 4
- Category: Alkaline earth metal
Physico-chemical properties
- Standard state: Solid
- Melting point: 842°C (1115 K)
- Boiling point: 1484°C (1757 K)
- Density: 1.54 g/cm³ at 20°C
- Electron configuration: [Ar] 4s²
Scientific description
Calcium is a chemical element with symbol Ca and atomic number 20. It belongs to the category of alkaline earth metals and occupies group 2 and period 4. Its standard atomic mass is 40.0780 u.
KODO: I2