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Among the following, the CORRECT combinations are : A. IF3 → T-shaped (sp3 d) B. IF5 → Square pyramidal (sp3 d2) C. IF7 → Pentagonal bipyramidal (sp3 d3) D. ClO4− → Square planar (sp2 d) Choose the correct answer from the options given below :

1. A, B and C only
2. A and B only
3. A, B, C and D
4. B, C and D Only

Correct answer: A, B and C only

Solution

Options A, B, and C correctly describe the molecular geometries and hybridizations of the respective compounds based on their electron pair geometries and the presence of lone pairs. IF3 is T-shaped due to three bonding pairs and two lone pairs, IF5 is square pyramidal with five bonding pairs and one lone pair, and IF7 has a pentagonal bipyramidal structure with seven bonding pairs. Option D is incorrect because ClO4− has a tetrahedral geometry, not square planar.

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