Chemical

Platinum does not corrode, and bulk platinum does not oxidize in air at any temperature, but heated metal wires lose weight faster in air or oxygen than it does in a vacuum. The suggestion is that Pt forms a thin surface film of {{chem2 that decomposes when heated above 500 °C.

The most common oxidation states of platinum are +2 and +4. The +1 and +3 oxidation states are less common, and are often

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