Calcium was discovered by Sir Humphrey Davy at 1808 in England.
Origin of name: from the Latin word "calx" meaning "lime"
Atomic Number: 20
Atomic Weight: 40.078
Melting Point: 1115 K (842°C or 1548°F)
Boiling Point: 1757 K (1484°C or 2703°F)
Density: 1.54 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 4 Group Number: 2 Group Name: Alkaline Earth Metal