CUET · CHEMISTRY · PYQ PAPER 2025
Match the complexes given in List - I with the geometry given in List - II
| List - I (Complex) | List - II (Geometry) |
| (A) \(\left[ NiCl _4\right]^{2-}\) | (I) Tetrahedral, paramagnetic |
| (B) \(\left[ Ni ( CN )_4\right]^{2-}\) | (II) Square planer, diamagnetic |
| (C) \(\left[ CoF _6\right]^{3-}\) | (III) Octahedral, diamagnetic |
| (D) \(\left[ Co \left( NH _3\right)_6\right]^{3+}\) | (IV) Octahedral, paramagnetic |
Choose the correct answer from the options given below:
- A (A) - (II), (B) - (I), (C) - (III), (D) - (IV)
- B (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
- C (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
- D (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
Answer & Solution
Correct Answer
(D) (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
Step-by-step Solution
Detailed explanation
(A) \(\left[ NiCl _4\right]^{2-}\): \(Ni^{2+}\) (\(3d^8\)). \(Cl^-\) is weak field. \(sp^3\) hybridization. Tetrahedral, paramagnetic (2 unpaired electrons). (B)\(\left[ Ni ( CN )_4\right]^{2-}\): \(Ni^{2+}\) (\(3d^8\)). \(CN^-\) is strong field. \(dsp^2\) hybridization. Square…
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