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CUET · CHEMISTRY · PYQ PAPER 2025

Select the correct statements for [Fe(CN)6]3- complex :
(A) Paramagnetic
(B) sp3d2 hybridization
(C) Magnetic moment = 5.92 BM
(D) d2sp3 hybridization
Choose the correct answer from the options given below :

  1. A (A) and (D) only
  2. B (A), (B) and (C) only
  3. C (B) and (C) only
  4. D (B), (C) and (D) only
Verified Solution

Answer & Solution

Correct Answer

(A) (A) and (D) only

Step-by-step Solution

Detailed explanation

Oxidation state of Fe: \( \text{Fe} + 6(-1) = -3 \implies \text{Fe} = +3 \) Electronic configuration of Fe3+: \( [\text{Ar}] 3d^5 \) CN- is a strong field ligand, forcing electron pairing. Number of unpaired electrons (n): 1 Hybridization: \( d^2sp^3 \) (inner orbital complex)…
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