JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Arrange the following in increasing order of ionic radii?

{C}^{4-}, {N}^{3-}, {F}^{-}, {O}^{2-}

View answer and explanation

Correct option: C

{F}^{-} < {O}^{2-} < {N}^{3-} < {C}^{4-}

Option C (

{F}^{-} < {O}^{2-} < {N}^{3-} < {C}^{4-}

) is correct because for isoelectronic species, ionic radii increase with increasing negative charge.

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

\mathrm{F}^{-}