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(Copying verbatim from my pre-registration answer)

Gold and Silver (and other Noble Metals like Iridium and Palladium) do actually corrode in air, just very very VERY slowly. Bonding with Oxygen is the usual source of chemical corrosion here on Earth, and every metal has its own personal "preference" for bonding with more of itself vs with Oxygen. Iron, for instance, likes Oxygen a lot, and turns into rust without much effort at all. Gold much prefers more Gold to Oxygen, so for the most part, it doesn't corrode. Metals which have very stable structures in a galvanic (electrochemical) sense don't tend to bond to Oxygen very often. Gold and Silver are two of these metals.

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8y ago

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Related Questions

Which metal does not corrode in air?

Gold is a metal that does not corrode in air because it is a noble metal with very low reactivity. This means that it does not readily react with oxygen or moisture in the air to form corrosion products.


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