Physical Properties ;
Melting Point (k): 1112.2
BoilingPoint (k): 1767
Phase : SOILD
Density : 155 g'cm
Electrons - 20
Protons - 20
Neutrons - 20
History : Calcium was discoverd by Sir Humphrey Davy at 1808 in England .
Future : Calcium is an important component of a healthy diet and a mineral necessary for life .
http://www.webelements.com/calcium/
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