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Match List-I with List-II List-I (Complex) (A) [CoF6]3- (B) [NiCl4]2- (C) [Co(NH3)6]3+ (D) [Ni(CN)4]2- List-II (Hybridisation of central metal ion) (I) d2sp3 (II) sp3 (III) sp3d2 (IV) dsp2 Choose the correct answer from the options given below:

1. (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
2. (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
3. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
4. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Correct answer: (A)-(III), (B)-(II), (C)-(I), (D)-(IV)

Solution

The correct option matches the hybridization of the central metal ions with their respective complexes: [CoF6]3- has octahedral geometry leading to d2sp3 hybridization, [NiCl4]2- is tetrahedral with sp3 hybridization, [Co(NH3)6]3+ is also octahedral with sp3d2 hybridization, and [Ni(CN)4]2- has square planar geometry resulting in dsp2 hybridization.

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