78Pt

Platinum

Transition Metal

Platinum (Pt) is element 78, a transition metal, in period 6 and group 10 of the periodic table. Its standard atomic weight is 195.084, it melts at 1768.3 °C and boils at 3825 °C. Discovered by Antonio de Ulloa, 1748.

Atomic Number78

SymbolPt

NamePlatinum

Atomic Weight195.084 u

CategoryTransition Metal

Period6

Group10

Melting Point1768.3 °C

Boiling Point3825 °C

Density21.46 g/cm³

Electron Config[Xe] 4f14 5d9 6s1

Discovered ByAntonio de Ulloa, 1748

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