Calcium

Properties

Atomic Number

20

Atomic Symbol

Ca

Atomic Mass

40.078

CAS No.

7440-70-2

Density

1.55 g/cm³

Series

alkaline earth metal

Melting Point

842°C

Boiling Point

1,484°C

Thermal Conductivity

2 W/cm °C

Heat of Fusion

8.54 kJ/mol

Heat of Vaporization

155 kJ/mol

Electronegativity

1 pauling

Crystal Structure

Cubic

Electrical Conductivity

2.9×10⁷ S/m