The experimental magnetic moment of K₃ [Fe(CN)₆] is 2.3 μB and is attributable to the · ABC26IN0334
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium
The experimental magnetic moment of $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ is $2.3\,\mu_{\mathrm{B}}$ and is attributable to the
(a)spin-only value of a low - spin
(b)spin-only value of a high-spin Fe.
(c)low-spin Fe with orbital contribution
(d)high-spin Fe with orbital contribution.
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Low-spin Fe(III) (t₂g⁵, ²T₂g) has unquenched orbital momentum, raising μ from 1.73 to ~2.3 BM (c).
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