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Electron Configuration Question?

Can someone explain please!

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  • Anonymous
    1 month ago
    Favourite answer

    P is phosphorus with the atomic number 15.  In a neutral atom, you have 15 protons and 15 electrons.  If you count up the electrons here, you have 2 + 2 + 6 + 2 + 1 = 13.  So you are missing 2 electrons and therefore have a +2 net charge (15 protons and 13 electrons).  The right answer is A.

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