A. The higher charge on Al^3+ causes the protons to pull in the outside electrons more than the smaller 2+ charge of Mg^2+; therefore, the Al^3+ will be smaller than Mg^2+.
B. Both N^3- and O^2- have extra electrons in their outer shells but those extra electrons, each carrying a negative charge repel each other; therefore, the N^3- ion should be the large of the two.
Determine which is larger member of each pair A) Mg2+ or Al3+ B) N3- or O2-? Explain
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Thank u so much for your help!
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