What property of metals like gold and platinum makes it so least reactive that they don't even react with hydrochloric acid?

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Solution

No reaction happens, but if hydrogen peroxide is added to gold the reaction starts after few minutes, the solution becomes opaque green in colour and gold in the acid will diappear.
Since gold is insoluble, it is believed to have minimal bioaccumulation and bioavailability characteristics.

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Q. Metals like silver, gold and platinum which do not corrode and do not react with oxygen even on strong heating are called ...................... metals.

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Q. Silver and gold do not react with oxygen even at a high temperature because they are highly reactive.

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What property of metals like gold and platinum makes it so least reactive that they don't even react with hydrochloric acid?

No reaction happens, but if hydrogen peroxide is added to gold the reaction starts after few minutes, the solution becomes opaque green in colour and gold in the acid will diappear. Since gold is insoluble, it is believed to have minimal bioaccumulation and bioavailability characteristics.

No reaction happens, but if hydrogen peroxide is added to gold the reaction starts after few minutes, the solution becomes opaque green in colour and gold in the acid will diappear.
Since gold is insoluble, it is believed to have minimal bioaccumulation and bioavailability characteristics.