Tantalum
Tantalum
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Tantalum ΒΆ
AtomicNumber: 73
Element: Tantalum
Symbol: Ta
AtomicMass: 180.948
NumberofNeutrons: 108
NumberofProtons: 73
NumberofElectrons: 73
Period: 6
Group: 5.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 2.1
Electronegativity: 1.5
FirstIonization: 7.5496
Density: 16.7
MeltingPoint: 3269.15
BoilingPoint: 5731.0
NumberOfIsotopes: 19.0
Discoverer: Ekeberg
Year: 1801.0
SpecificHeat: 0.14
NumberofShells: 6
NumberofValence: nan