AIPMT MAINS2012Chemistry-Coordination Compounds
AIPMT MAINS 2012 Chemistry Crystal Field Theory MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Low spin complex of d⁶-cation in an octahedral field will have the following energy: (Δ₀ = Crystal Field Splitting Energy in an octahedral field, P = Electron pairing energy)
A
−12/5 Δ₀ + P
B
−12/5 Δ₀ + 3P
C
−2/5 Δ₀ + 2P
D
−2/5 Δ₀ + P
Correct Answer
Option B
Detailed Explanation
For a low spin d⁶ complex, the crystal field stabilization energy (C.F.S.E.) is calculated as −0.4 × 6 Δ₀ + 3P, which simplifies to −12/5 Δ₀ + 3P.
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