Lawrencium
Lawrencium
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Lawrencium ΒΆ
AtomicNumber: 103
Element: Lawrencium
Symbol: Lr
AtomicMass: 262.0
NumberofNeutrons: 159
NumberofProtons: 103
NumberofElectrons: 103
Period: 7
Group: nan
Phase: artificial
Radioactive: yes
Natural: nan
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Actinide
AtomicRadius: nan
Electronegativity: nan
FirstIonization: nan
Density: nan
MeltingPoint: nan
BoilingPoint: nan
NumberOfIsotopes: 203.0
Discoverer: Ghiorso et al.
Year: 1961.0
SpecificHeat: nan
NumberofShells: 7
NumberofValence: nan