Name:
Calcium
Symbol:
Ca
Atomic Number:
20
Atomic Mass:
40.08
Atomic Volume:
26.20 cc/mol
Discovered By:
Sir Humphrey Davy
Discovery Date:
1808
Origin of Name:
Calcium - (Latin) calx (lime)
Toxicity:
Not toxic. Compounds are normally not toxic. Calcium hydroxide and calcium oxide act as irritants, producing burns.
Summary:
Never found free in Nature. Essential component in shells, bones, and teeth. Also found in limestone, marble, and cement.
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