Niobium
Niobium
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Niobium ΒΆ
AtomicNumber: 41
Element: Niobium
Symbol: Nb
AtomicMass: 92.906
NumberofNeutrons: 52
NumberofProtons: 41
NumberofElectrons: 41
Period: 5
Group: 5.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 2.1
Electronegativity: 1.6
FirstIonization: 6.7589
Density: 8.57
MeltingPoint: 2741.15
BoilingPoint: 5017.0
NumberOfIsotopes: 24.0
Discoverer: Hatchett
Year: 1801.0
SpecificHeat: 0.265
NumberofShells: 5
NumberofValence: nan