Structural element of bone, shell and cement: calcium is how life learned to build hard things.
- Atomic number
- 20
- Atomic mass
- 40.078 u
- Phase
- Solid
- Electron configuration
- [Ar] 4s²
- Melting point
- 1,115 K · 841.9 °C
- Boiling point
- 1,757 K · 1,483.9 °C
- Density
- 1.54 g/cm³
- Electronegativity
- 1
- Period / Group
- 4 / 2
- Discovery year
- 1808