Why are alluminium and zinc are known as self protecting metals?
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Due to high reactivity of aluminium a thin layer of aluminium oxide is formed on it. This protective layer of aluminium oxide prevents the metal from further corrosion. Hence, aluminium is called a self protecting metal.
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Explanation:
Due to high reactivity of aluminium a thin layer of aluminium oxide is formed on it. This protective layer of aluminium oxide prevents the metal from further corrosion. Hence, aluminium is called a self protecting metal.
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