Periodic Table of the Elements: Promethium

Name: Promethium
Symbol: Pm
Atomic Number: 61
Atomic Mass: (145)
Atomic Volume: ??? cc/mol
Discovered By: First manufactured by Law in 1941
Discovery Date: 1941
Origin of Name: Promethium - named for Prometheus, who stole fire from heaven in Roman mythology
Toxicity: ???
Summary: Not found naturally on earth. First predicted by Branner in 1902. Manufactured by nuclear bombardment.


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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLr

© Copyright 1998 David August