JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The corerct order of atomic /ionic sizes is

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Correct option: B

{F^ - } < {O^{2 - }} < {N^{3 - }}

Option B (

{F^ - } < {O^{2 - }} < {N^{3 - }}

) is correct because for isoelectronic species, the ionic size increases with increasing negative charge (decreasing nuclear charge).

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\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}