Ca | elementencyclopedia

Is the twentieth element of the periodic table, it is a silvery colour, and is in group 2. Calcium is reactive.

Symbol: Ca

Atomic mass; 40.078

Atomic number: 20

Electronegativity: 1

Electrons per shell: 2, 8,8,2

Melting point: 839 degrees C

Discoverer: Sir Humphrey Davy

- Calcium is an alkaline earth metal, it is not magnetic.

- It is similar to all other group 2 elements - they all are alkaline earth metals and all have 2 valence electrons.

- Calcium reacts best with elements in group 6.

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