alleryFor octahedral d6 with weak-field ligands (high-spin), number of unpaired electrons:
A2
B4
C0
D6
Answer & Solution
Correct answer: B. 4
High-spin d⁶ in octahedral: t2g⁴ eg² with maximum unpaired e⁻ per Hund's rule.
So 4 unpaired electrons (4 in t2g singles + 2 in eg singles).
Magnetic moment ≈ 4.9 BM.
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