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30 September, 22:37

Why does aluminum most often have an oxidation state of + 3

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  1. 1 October, 02:21
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    Aluminium most often has an oxidation state of + 3 because it has three valence electrons that are removed relatively easily.

    Al is in Group 13, so it has three valence electrons.

    To get a complete octet, it must either lose three electrons or gain five.

    It is easier to remove three electrons, so Al most often has an oxidation state in its compounds.
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