Among the following the correct combinations are IF3 IF5 IF7 and ClO4 minus molecular geometry question
Q. Among the following, the CORRECT combinations are

A. IF3 → T-shaped (sp3d)

B. IF5 → Square pyramidal (sp3d2)

C. IF7 → Pentagonal bipyramidal (sp3d3)

D. ClO4− → Square planar (sp2d)

Choose the correct answer from the options given below:

(A) B, C and D Only

(B) A, B, C and D

(C) A, B and C Only

(D) A and B Only

Correct Answer: (C)

Explanation

Statement A:

In IF3, iodine has 7 valence electrons. It forms 3 bond pairs and has 2 lone pairs.

Total electron pairs = 5 → sp3d hybridisation.

With two equatorial lone pairs, the molecular shape becomes T-shaped.

Statement A is correct.

Statement B:

In IF5, iodine forms 5 bond pairs and has 1 lone pair.

Total electron pairs = 6 → sp3d2 hybridisation.

One lone pair gives square pyramidal geometry.

Statement B is correct.

Statement C:

In IF7, iodine forms 7 bond pairs and has no lone pair.

Total electron pairs = 7 → sp3d3 hybridisation.

The geometry is pentagonal bipyramidal.

Statement C is correct.

Statement D:

In ClO4−, chlorine forms four equivalent bonds.

The geometry is tetrahedral with sp3 hybridisation, not square planar.

Statement D is incorrect.

Hence, the correct combinations are A, B and C only.

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