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Calcium
Calcium is part of the Alkali Earth Metals, and is the 20th element in the periodic table. Calcium compounds are very common, for example chalk etc.
Who discovered it:Humphrey Davy
When was it discovered:1808
Symbol:Ca
Group:2
Row:4
Number of Protons(+):20
Number of Neutrons:20
Number of Electrons(-):20
Atomic Mass: 40.078 u ± 0.004 u
Electron Configuration:[Ar]4s
2
CaCO
3
Foods Rich In Calcium
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