Why does gold and platinum not corrode?

Gold and platinum are very least reactive metals and doesn't reacts with air and moisture easily. Because of gold is extracted from ground in pure form and doesn't have any need to go in chemical industries like other metals. read more

We know that elements which are placed at the bottom of the reactivity series are quite inert or unreactive. Both gold and platinum, which are placed at the bottom of the reactivity series are noble metals which do not react easily. Hence, they do not corrode in moist air. read more

Platinum is Considered a noble metal (such as gold) and one of it 's main characteriscs is the resistence to corrosion (or for most metals, oxidation). But being resistent to corrosion does not mean it can not be corroded and even dissolved (the result of the corrosion process is soluble ). read more

Gold also reacts with acids. However, it doesn't react with oxygen, nitrogen, or really any of the gases present in the atmosphere. Which is why you won't see gold "rust." If we lived on a planet that stayed 170 degrees Celsius, then we might see gold "rust" - but we'd also die pretty soon after that. read more