Polonium
Polonium
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Polonium ΒΆ
AtomicNumber: 84
Element: Polonium
Symbol: Po
AtomicMass: 210.0
NumberofNeutrons: 126
NumberofProtons: 84
NumberofElectrons: 84
Period: 6
Group: 16.0
Phase: solid
Radioactive: yes
Natural: yes
Metal: nan
Nonmetal: nan
Metalloid: yes
Type: Metalloid
AtomicRadius: 1.5
Electronegativity: 2.0
FirstIonization: 8.417
Density: 9.32
MeltingPoint: 527.15
BoilingPoint: 1235.0
NumberOfIsotopes: 34.0
Discoverer: Curie
Year: 1898.0
SpecificHeat: nan
NumberofShells: 6
NumberofValence: 6.0