Periodic Table of the Elements: Cobalt

Name: Cobalt
Symbol: Co
Atomic Number: 27
Atomic Mass: 58.9332
Atomic Volume: 6.70 cc/mol
Discovered By: Brandt
Discovery Date: 1735
Origin of Name: Cobalt - (German) Kobald (gremlin or evil spirit), (Greek) cobalos (mine)
Toxicity: Finely dispersed cobalt dust is partly toxic (produces changes in the lungs). Cobalt compounds are toxic in large amounts.
Summary: Cobalt-60 is used as a gamma ray source. Cobalt produces a dark blue color in glass.


back to table

HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August