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N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) ...

`N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+)` Arrange them in the order of increasing ionic radii.

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Ionic radii is inversely related to unclear charge for isoelectronic species. Hence the order is `Al^(3+) lt Mg^(2+) lt Na^+ lt F^- lt O^(2-) gt N^(3-)`.
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A N EXCEL PUBLICATION-CLASSIFICATION TO ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
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