Q15 · CSIR-NET Chemistry, June 2021

Paper: CSIR-NET June 2021 · Subject: Inorganic Chemistry · Chapter: Lanthanides and Actinides · Topic: Lanthanides & Actinides – General · Marks: 2 · Difficulty: Easy

The effective magnetic moment (in BM) for a lanthanide $\mathrm{f}^{10}$ ion is approximately
(a)10.6
(b)9.92
(c)9.59
(d)7.94
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
f¹⁰ Dy³⁺: ⁶H₁₅/₂, g_J = 4/3, μ = g_J√(J(J+1)) ≈ 10.6 BM (a).

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