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29 March, 21:42

Which element is the total number of valence electrons in an atom with a total of 13 protons

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  1. 30 March, 01:40
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    This is Aluminium.

    3 Valency electrons.

    Explanation:

    The atomic number is 13 and the electronic configuration is

    1s22s22p63s23p1. This is Aluminium.

    It has 3 valency electrons. (3s23p1).
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