Periodic Table of the Elements: Chromium


Name: Chromium
Symbol: Cr
Atomic Number: 24
Atomic Mass: 51.996
Atomic Volume: 7.23 cc/mol
Discovered By: Vauquelin
Discovery Date: 1797
Origin of Name: Chromium - (Greek) chroma (color)
Toxicity: Finely dispersed chromium is toxic on inhalation, as are chromium compounds. Compounds of hexavalent chromium, chromates, and bichromates are most toxic.
Summary: Not found free in nature. Chromium is used for decorative coatings because it is not oxidized by air.

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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

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