Question

Match List - I with List - II. 

List - I (Complex)	List - II (Hybridisation)
(A) \([\text{CoF}_6]^{3-}\)	(I) \( d^2 sp^3 \)
(B) \([\text{NiCl}_4]^{2-}\)	(II) \( sp^3 \)
(C) \([\text{Co(NH}_3)_6]^{3+}\)	(III) \( sp^3 d^2 \)
(D) \([\text{Ni(CN}_4]^{2-}\)	(IV) \( dsp^2 \)

Choose the correct answer from the options given below:

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
• C. (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
• D. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)

Hint:

For coordination compounds, use the valence bond theory (VBT) and crystal field splitting to determine hybridization.

Answer 1

The Correct Option is C

• \([\text{CoF}_6]^{3-}\): Hybridization is \( sp^3d^2 \).
• \([\text{NiCl}_4]^{2-}\): Exhibits \( sp^3 \) hybridization.
• \([\text{Co(NH}_3)_6]^{3+}\): Hybridization is \( d^2sp^3 \).
• \([\text{Ni(CN}_4]^{2-}\): Forms \( dsp^2 \) hybridization.