Which of the following are isostructural pairs?

Question:

Which of the following are isostructural pairs?

(A) $\mathrm{SO}_{4}^{2-}$ and $\mathrm{CrO}_{4}^{2-}$

(B) $\mathrm{SiCl}_{4}$ and $\mathrm{TiCl}_{4}$

(c) $\mathrm{NH}_{3}$ and $\mathrm{NO}_{3}^{-}$

(D) $\mathrm{BCl}_{3}$ and $\mathrm{BrCl}_{3}$

  1. A and $C$ only

  2. $A$ and $B$ only

  3. $B$ and $C$ only

  4. C and D only


Correct Option: , 2

Solution:

(a) $\mathrm{SO}_{4}^{-2}$ and $\mathrm{CrO}_{4}{ }^{2-}$ both have tetrahedral structure.

(b) $\mathrm{SiCl}_{4}$ and $\mathrm{TiCl}_{4}$ both have Tetrahedral structure also.

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