Question

Magnesium ribbon is rubbed before burning because it has a coating of

Answer 1

Answer:

basic magnesium oxide

Explanation:

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Answer 2

Answer:

magnesium oxide

Explanation: Magnesium is a highly reactive metal. When exposed to air it forms a layer of magnesium oxide on its surface, which prevents further reaction of magnesium with oxygen. Magnesium ribbon is rubbed before burning because it has a coating of basic magnesium oxide.