Periodic Table of the Elements: Calcium

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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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August