Lead
Lead
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Lead ΒΆ
AtomicNumber: 82
Element: Lead
Symbol: Pb
AtomicMass: 207.2
NumberofNeutrons: 125
NumberofProtons: 82
NumberofElectrons: 82
Period: 6
Group: 14.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Metal
AtomicRadius: 1.8
Electronegativity: 2.33
FirstIonization: 7.4167
Density: 11.3
MeltingPoint: 600.75
BoilingPoint: 2022.0
NumberOfIsotopes: 29.0
Discoverer: Prehistoric
Year: nan
SpecificHeat: 0.129
NumberofShells: 6
NumberofValence: 4.0