Match List - I with List - II. Choose the correct answer from the options given below:
- (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
- (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
- (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
Answer
(4) (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
Solution
(A) [CoF6]3-: Co3+, 3d6; F- is a weak-field ligand, no pairing outer-orbital complex, sp3d2 (III).
(B) [NiCl4]2-: Ni2+, 3d8; Cl- is weak field, no pairing tetrahedral, sp3 (II).
(C) [Co(NH3)6]3+: Co3+, 3d6; NH3 pairs the electrons (two 3d orbitals vacant) inner-orbital, d2sp3 (I).
(D) [Ni(CN)4]2-: Ni2+, 3d8; CN- is strong field, the eight electrons pair up in four 3d orbitals square planar, dsp2 (IV).
(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
Answer: (4)