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Aluminum is more reactive than iron, yet it is used today for a variety of applications in which iron would corrode (cans, rain gutters,etc). The reason for the corrosion durability
of aluminum is
1. all aluminum products are treated with a plastic coating.
2. aluminum does not undergo oxidation.
3. very unreactive aluminum oxide forms a thin layer on aluminum.
4. aluminum does not react with oxygen.

  • Chemistry -

    The correct answer is 3.

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