Why is aluminium unreactive with air under normal conditions?

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A It is covered with a protective layer of oxide
B It sits very low in the reactivity series
C It is produced via the electrolysis of its oxide
D It has an extremely high melting point

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Answer: A. It is covered with a protective layer of oxide

Answer: A) It is covered with a layer of oxide
Explanation: Aluminium reacts rapidly with oxygen to form a very thin, tough, and adherent layer of aluminium oxide (Al₂O₃). This passive layer seals the underlying metal from further contact with air or moisture

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Why is aluminium unreactive with air under normal conditions?

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