Periodic Table of the Elements: Actinium

Name: Actinium
Symbol: Ac
Atomic Number: 89
Atomic Mass: (227)
Atomic Volume: ??? cc/mol
Discovered By: Debierne
Discovery Date: 1899
Origin of Name: Actinium (Greek) aktinos (ray or beam)
Toxicity: ???
Summary: Found associated with uranium in Nature. It is formed by the nuclear decay of uranium-235.


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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August