Boron
Boron
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Boron ΒΆ
AtomicNumber: 5
Element: Boron
Symbol: B
AtomicMass: 10.811
NumberofNeutrons: 6
NumberofProtons: 5
NumberofElectrons: 5
Period: 2
Group: 13.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: nan
Nonmetal: nan
Metalloid: yes
Type: Metalloid
AtomicRadius: 1.2
Electronegativity: 2.04
FirstIonization: 8.298
Density: 2.34
MeltingPoint: 2573.15
BoilingPoint: 4200.0
NumberOfIsotopes: 6.0
Discoverer: Gay-Lussac
Year: 1808.0
SpecificHeat: 1.026
NumberofShells: 2
NumberofValence: 3.0