The complex that is expected to show orbital contribution to the overall magnetic moment is · ABC26IN0635
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Compounds – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
The complex that is expected to show orbital contribution to the overall magnetic moment is
(a)$\left[\mathrm{Cr}(\mathrm{CN})_{6}\right]^{3-}$
(b)$\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(c)$\left[\mathrm{Ni}(\mathrm{en})_{3}\right]^{2+}$
(d)$\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
High-spin [Co(H₂O)₆]²⁺ has a ⁴T₁g ground term and shows orbital contribution; A₂g/E_g ground terms do not (b).
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