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Am - Americium - periodic table of the elements

A small amount of americium provides electrons in smoke detectors. It was discovered by Glenn Seaborg in 1944 in Berkeley.


Atomic number - 95 Density g/mL 13 .6
Atomic weight u 243 Melting point K 1268
Bonding radius A - Boiling point K 2880
Atomic radius A - Heat of vaporization kJ/mol -
Ionization Potential V 5 .993 Heat of fusion kJ/mol 14 .4
Electronegativity - 1 .3 Specific heat J/gK 0 .11
The oxide is amphoteric.
Crystal are hexagonal.

Electron configuration: [Rn] 5f7 7s2

Other elements of the periodic table

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HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLa * HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAc ** RfDbSgBhHsMt110111112113
Lanthanides* CePrNdPmSmEuGdTbDyHoErTmYbLu
Actinides ** ThPaUNpPuAmCmBkCfEsFmMdNoLr