Rutherfordium
Rutherfordium
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Rutherfordium ΒΆ
AtomicNumber: 104
Element: Rutherfordium
Symbol: Rf
AtomicMass: 261.0
NumberofNeutrons: 157
NumberofProtons: 104
NumberofElectrons: 104
Period: 7
Group: 4.0
Phase: artificial
Radioactive: yes
Natural: nan
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transactinide
AtomicRadius: nan
Electronegativity: nan
FirstIonization: nan
Density: 18.1
MeltingPoint: nan
BoilingPoint: nan
NumberOfIsotopes: nan
Discoverer: Ghiorso et al.
Year: 1969.0
SpecificHeat: nan
NumberofShells: 7
NumberofValence: nan