20 Ca 40.078

Calcium

Category: Alkaline earth metal | State: Solid

Atomic Properties

Atomic Number 20
Atomic Mass 40.078
Electronic Configuration [Ar] 4s²

Periodic Table Placement

Group 2
Period 4
Block s-block

Physical Properties & Discovery

Melting Point 842°C
Boiling Point 1484°C
Density 1.54 g/cm³
Discovered By Humphry Davy (1808)

Frequently Asked Questions about Calcium