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22 April, 14:48

The ion 27al3 + contains which combination of protons, neutrons, and electrons?

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  1. 22 April, 15:29
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    Al atom has 13 protons, 13 electrons.

    Mass number = number protons + number neutrons

    27 = 13 + number neutrons,

    number neutrons = 27 - 13 = 14 neutrons.

    Ion Al³⁺, lost 3 electrons.

    So, in Al³⁺, 13-3=10 electrons.

    So, ion Al³⁺ has 13 protons, 14 neutrons, 10 electrons.
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