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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.
What else can I help you with?
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.
Names of three metals which do not corrode?
The three metals that do not corrode are gold, silver and platinum.
Why do gold and platinum do not corrode in moist air?
They are both noble metals, very non-reactive, hence resistant to corrosion.
What metals corrode in air?
Metals such as iron, steel, and aluminum can corrode in air due to the presence of oxygen and moisture, forming rust or other types of corrosion. Other metals, like gold and platinum, are more resistant to corrosion in air due to their chemical stability.
Do acids corrode metals?
Yes. Some can only corrode soft things, and some can corrode everything. But in short, all acids can corrode something. It only gets dangerous if the acid can corrode you.
What type of gold is most likely to corrode?
Fake gold is the type that is most likely to corrode. Real gold does not corrode.
Does platinum corrode over time?
Yes, platinum is a highly corrosion-resistant metal and does not corrode over time.
Does alloy gold corrode?
Gold alloys doesn't corrode in normal conditions.
What metal that does not react air?
Gold(Au) cannot react in rooom temperature.
Does gold corrode more easily thans silver?
As i rememeber gold do not corrode at all.
Why metals have inherent tendency to corrode?
Most metals do. The few exceptions are precious metals like gold and platinum, which are very resistant to corrosion.
Can gold corrode from being worn a lot?
Gold is extremely unlikely to "corrode". It may, however, become worn, and gold alloys, especially those with low gold content, may corrode.
