Americium
Americium
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Americium ΒΆ
AtomicNumber: 95
Element: Americium
Symbol: Am
AtomicMass: 243.0
NumberofNeutrons: 148
NumberofProtons: 95
NumberofElectrons: 95
Period: 7
Group: nan
Phase: artificial
Radioactive: yes
Natural: nan
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Actinide
AtomicRadius: nan
Electronegativity: 1.3
FirstIonization: 5.9738
Density: 13.7
MeltingPoint: 1267.15
BoilingPoint: 2880.0
NumberOfIsotopes: 133.0
Discoverer: Seaborg et al.
Year: 1944.0
SpecificHeat: nan
NumberofShells: 7
NumberofValence: nan