Questions

Of the following sets which one does not contain isoelectronic species?

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{PO}_{4}^{3 -}, {SO}_{4}^{2 -}, {ClO}_{4}^{-}

{CN}^{-}, N_{2}, C_{2}^{2 -}

{SO}_{3}^{2 -}, {CO}_{3}^{2 -}, {NO}_{3}^{-}

{BO}_{3}^{3 -}, {CO}_{3}^{2 -}, {NO}_{3}^{-}

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detailed solution

Correct option is C

The number of electrons of each species in the choice a is 50.

The number of electrons of each species in the choice b is 14.

The number of electrons of each species in the choice c are:

${SO}_{3}^{2 -} (42), {CO}_{3}^{2 -}$ and ${NO}_{3}^{-} (42)$ .

The number of electrons of each species in the choice d is 32.

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