RE-NEET 2026 Chemistry Molecular Geometry Match the Following Question
Match the species in List I with their geometry in List II.
| List I | List II |
|---|---|
| (A) PCl₅ | (I) Tetrahedral |
| (B) BrF₅ | (II) Square Planar |
| (C) BF₄⁻ | (III) Trigonal bipyramidal |
| (D) [Ni(CN)₄]²⁻ | (IV) Square pyramidal |
A-III, B-IV, C-I, D-II
A-III, B-I, C-II, D-IV
A-III, B-II, C-I, D-IV
A-IV, B-III, C-I, D-II
Correct Answer
Detailed Explanation
The correct answer is A: A-III, B-IV, C-I, D-II.
PCl₅ has a trigonal bipyramidal geometry due to five bonding pairs around phosphorus, leading to option A-III. BrF₅ exhibits a square pyramidal shape because of the presence of five bonding pairs and one lone pair, matching option B-IV. BF₄⁻ has a tetrahedral geometry with four bonding pairs around boron, corresponding to option C-I. Lastly, [Ni(CN)₄]²⁻ is square planar due to the presence of four bonding pairs and no lone pairs, aligning with option D-II.
Other options fail because they misassign the geometries based on the number of bonding pairs and lone pairs present in each species.
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