Osmium
Osmium
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Osmium ΒΆ
AtomicNumber: 76
Element: Osmium
Symbol: Os
AtomicMass: 190.23
NumberofNeutrons: 114
NumberofProtons: 76
NumberofElectrons: 76
Period: 6
Group: 8.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 1.9
Electronegativity: 2.2
FirstIonization: 8.4382
Density: 22.6
MeltingPoint: 3300.15
BoilingPoint: 5285.0
NumberOfIsotopes: 19.0
Discoverer: Tennant
Year: 1803.0
SpecificHeat: 0.13
NumberofShells: 6
NumberofValence: nan