Question

why Fe and CU does not burn on heating​

Answer 1

Iron doesn't burn on strong heating, but iron filings burn vigorously when sprinkled on a flame. ... The reason an iron bar won't generally burn is because the oxygen can't get inside. The surface layer actually does burn, but that forms a layer on the surface that keeps the oxygen from getting to the rest of the iron.

Answer 2

Iron metal does not burn even on strong heating. It reacts with the oxygen of air on heating to form iron oxide.

Copper metal does not burn even on strong heating but reacts with oxygen of air to form a black substance copper .

hope it helps....

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