Q39 · CSIR-NET Chemistry, June 2018

Paper: CSIR-NET June 2018 · Subject: Inorganic Chemistry · Chapter: Lanthanides and Actinides · Topic: Lanthanides & Actinides – General · Marks: 2 · Difficulty: Easy

Trivalent lanthanide ion having isotropic magnetic susceptibility is
(a)$\mathrm{Eu^{3+}}$
(b)$\mathrm{Gd^{3+}}$
(c)$\mathrm{Yb^{3+}}$
(d)$\mathrm{Lu^{3+}}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Gd³⁺ (f⁷, ⁸S₇/₂, L = 0) has an isotropic, spin-only moment (b).

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