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(D) All the given ions are isoelectronic,meaning they all have $10$ electrons.$F^{-} = 9 + 1 = 10$ electrons$O^{2-} = 8 + 2 = 10$ electrons$Al^{3+} =

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$N^{3-}$

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(D) All the given ions are isoelectronic,meaning they all have $10$ electrons.$F^{-} = 9 + 1 = 10$ electrons$O^{2-} = 8 + 2 = 10$ electrons$Al^{3+} = 13 - 3 = 10$ electrons$N^{3-} = 7 + 3 = 10$ electronsFor isoelectronic species,the ionic radius increases as the nuclear charge $(Z)$ decreases.The atomic numbers are: $N (7)$,$O (8)$,$F (9)$,$Al (13)$.Since $N^{3-}$ has the lowest nuclear charge $(Z = 7)$,the electrostatic attraction between the nucleus and the electron cloud is the weakest,resulting in the largest ionic size.

Which one of the following is expected to have the largest size?

Similar Questions

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