Details : Item 215

Alkali metals
Alkaline earth metal
Transition metals I
Transition metals II
Transition metals III
Transition metals IV
Post-transition metal
Diatomic non-metal
Noble gas

Famille : Alkaline earth metal/3
Symbol: Ca, phase: solid, dull gray, silver, yellow tint
As a major material used in mineralization of bone, teeth
and shells, calcium is the most abundant metal by mass
in many animals. It poses few environmental problems.
Atomic number20
Atomic weight40.078
Melting point (K)1115
Boiling point (K)1757
Speed of sound (m/s)3810
Discovery1808 (H. Davy)