Platinum
Platinum
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Platinum ΒΆ
AtomicNumber: 78
Element: Platinum
Symbol: Pt
AtomicMass: 195.084
NumberofNeutrons: 117
NumberofProtons: 78
NumberofElectrons: 78
Period: 6
Group: 10.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 1.8
Electronegativity: 2.28
FirstIonization: 8.9587
Density: 21.5
MeltingPoint: 2045.15
BoilingPoint: 4098.0
NumberOfIsotopes: 32.0
Discoverer: Ulloa/Wood
Year: 1735.0
SpecificHeat: 0.133
NumberofShells: 6
NumberofValence: nan