Curium
Curium
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Curium ΒΆ
AtomicNumber: 96
Element: Curium
Symbol: Cm
AtomicMass: 247.0
NumberofNeutrons: 151
NumberofProtons: 96
NumberofElectrons: 96
Period: 7
Group: nan
Phase: artificial
Radioactive: yes
Natural: nan
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Actinide
AtomicRadius: nan
Electronegativity: 1.3
FirstIonization: 5.9915
Density: 13.5
MeltingPoint: 1340.15
BoilingPoint: 3383.0
NumberOfIsotopes: 133.0
Discoverer: Seaborg et al.
Year: 1944.0
SpecificHeat: nan
NumberofShells: 7
NumberofValence: nan