Which one of the following has the largest io | vedclass

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(A) All the given ions $(O_2^{2-}, F^-, Li^+, B^{3+})$ are isoelectronic with the neon configuration $(1s^2 2s^2 2p^6)$,having $10$ electrons. For iso

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$O_2^{2-}$

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(A) All the given ions $(O_2^{2-}, F^-, Li^+, B^{3+})$ are isoelectronic with the neon configuration $(1s^2 2s^2 2p^6)$,having $10$ electrons. For isoelectronic species,the ionic radius increases as the nuclear charge $(Z)$ decreases. The atomic numbers are: $O (Z=8)$,$F (Z=9)$,$Li (Z=3)$,$B (Z=5)$. Since $O_2^{2-}$ has the lowest nuclear charge $(Z=8)$,it exerts the least attraction on the electrons,resulting in the largest ionic radius.

Which one of the following has the largest ionic radius?

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