Question

The metals develop a protective layer over its surface by reaction with air

Answer 1

ANSWER:-

➡️Magnesium is a very reactive metal,so when usually exposed to air it reacts with oxygen and

➡️a layer of magnesium oxide is deposited on it.

➡️Magnesium oxide is quite stable, so prevents further reaction with oxygen.

➡️2Mg + O2 → 2MgO⬅️

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