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Question

Which of the following are isostructural pairs?
A. SO2−4 and CrO2−4
B. SiCl4 and TiCl4
C. NH3 and NO−3
D. BCl3 and BrCl3

A
A and C only
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B
B and C only
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C
A and B only
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D
C and D only
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Solution

The correct option is C A and B only
Isostructural species are those which have the same shape.
SO24 and CrO24 have tetrahedral shape.
SiCl4 and TiCl4 have tetrahedral shape.
NH3 has trigonal pyramidal shape but NO3 has trigonal planar shape.
BCl3 has trigonal planar shape but BrCl3 has T-shape.

So, option (c) is the correct answer.

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