Gold does not get corroded due to oxidation. Why?
Gold forms an unstable oxide film on metal surface.They get decomposed on metal surfaces back to metal & oxygen.Consequently, oxidation corrosion is not possible such a case.Thus Pt,Au and Ag don’t go under corrosion
Metal+Oxygen →Metal oxide →Metal+Oxygen.
Concept: Factors Affecting the Rate of Corrosion- Nature of Metal
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