AIIMS 2019 Chemistry Hybridization MCQ Question

The molecular geometry of PCl₅, BrF₅, and IF₇ involves the use of d-orbitals in their bonding, which corresponds to an sp³d³ hybridization. In these compounds, the central atom uses five d-orbitals to accommodate the bonding pairs and lone pairs, leading to a trigonal bipyramidal (PCl₅) or octahedral (BrF₅ and IF₇) geometry. Options A (sp³d), B (sp³d²), and D (sp³d⁴) are incorrect as they do not account for the presence of seven total electron pairs, which is necessary for the correct hybridization in these molecules.