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Match the species in List-I with their geometry in List-II.
Column I
- A. $PCl_5$
- B. $BrF_5$
- C. $BF_4^-$
- D. $[Ni(CN)_4]^{2-}$
Column II
- I. Tetrahedral
- II. Square Planar
- III. Trigonal bipyramidal
- IV. Square pyramidal
Correct answer: A → III, B → IV, C → I, D → II
Detailed Solution
(A) $PCl_5$: $sp^3d$, trigonal bipyramidal. (B) $BrF_5$: $sp^3d^2$ with 1 lone pair, square pyramidal. (C) $BF_4^-$: $sp^3$, tetrahedral. (D) $[Ni(CN)_4]^{2-}$: $dsp^2$, square planar.