Barium
Barium
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Barium ΒΆ
AtomicNumber: 56
Element: Barium
Symbol: Ba
AtomicMass: 137.327
NumberofNeutrons: 81
NumberofProtons: 56
NumberofElectrons: 56
Period: 6
Group: 2.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Alkaline Earth Metal
AtomicRadius: 2.8
Electronegativity: 0.89
FirstIonization: 5.2117
Density: 3.59
MeltingPoint: 1002.15
BoilingPoint: 2170.0
NumberOfIsotopes: 25.0
Discoverer: Davy
Year: 1808.0
SpecificHeat: 0.204
NumberofShells: 6
NumberofValence: 2.0