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Platinum  SEE PERIODIC TABLE
see article  SEE FULL ARTICLE


Atomic Number78

Atomic SymbolPt

Atomic Weight195.08 amu

GroupTransition, 10

FormSolid

Density @ STP21.5 g/cm3

Melting Point1768.4 °C (3215.12 °F, 2041.55 °K)

Boiling Point3825 °C (6917 °F, 4098.15 °K)

Heat of Fusion22.17 kJ/mol

Heat of Vaporization490 kJ/mol

First Ionization Potential9.0 eV

Electronegativity (on Pauling scale)2.2

Specific Heat Capacity0.133 J/g K

Ground State Electron Configuration5d9 6s1

Oxidation States+2, +4

Stable Isotopes and Natural Abundance on Earth190Pt, 0.01%; 192Pt, 0.79%; 194Pt, 32.9%; 195Pt, 33.8%; 196Pt, 25.3%; 198Pt, 7.2%

Atomic Radius177 pm

Crystal StructureCubic

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