Question

Which of the following are isostructural?

(I) ${N{O}_3}^{-}$
(II) ${C{O}_3}^{2-}$
(III) $Cl{O}_3$${}^{-}$
(IV) $S{O}_3$
(V) $Xe{O}_3$

• A. (I) and (IV)
• B. (II) and (V)
• C. (III) and (IV)
• D. (IV) and (V)

Answer 1

The correct option is A (I) and (IV)

The structures of the compounds are given in the figure.

Hence, the correct choice is option A. $N{O}_3^{-}$ and $S{O}_3$ are isostructural. Both are trigonal planar.