Fermium
Fermium
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Fermium ΒΆ
AtomicNumber: 100
Element: Fermium
Symbol: Fm
AtomicMass: 257.0
NumberofNeutrons: 157
NumberofProtons: 100
NumberofElectrons: 100
Period: 7
Group: nan
Phase: artificial
Radioactive: yes
Natural: nan
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Actinide
AtomicRadius: nan
Electronegativity: 1.3
FirstIonization: 6.5
Density: nan
MeltingPoint: nan
BoilingPoint: nan
NumberOfIsotopes: 103.0
Discoverer: Ghiorso et al.
Year: 1953.0
SpecificHeat: nan
NumberofShells: 7
NumberofValence: nan