Q48 / 180 · NEET 2016 (Phase 2) · Chemistry

Which of the following pairs of ions is isoelectronic and isostructural?

Correct answer
A
${CO}_{3}^{2 -}, {NO}_{3}^{-}$
B
${ClO}_{3}^{-}, {CO}_{3}^{2 -}$
C
${SO}_{3}^{2 -}, {NO}_{3}^{-}$
D
${ClO}_{2}^{-}, {SO}_{3}^{2 -}$

Solution

Molecules contain the same number of electrons are known as isoelectronic species and those have same shape known as isostructural. Above two compounds, Both have $32$ electrons with trigonal planar structure.

Hence, the correct answer is option: 'A'.

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