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 : Transition metals III/4
Symbol: Co, phase: solid, hard lustrous bluish gray metal
Used in the preparation of magnetic alloys. Cobalt is
essential to the metabolism of all animals. It is a key
constituent of cobalamin, also known as vitamin B12.
Atomic number27
Atomic weight58.933194
Melting point (K)1768
Boiling point (K)3200
Speed of sound (m/s)4720
Discovery1732 (G. Brandt)