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NEET2024Chemistryd and f Block ElementsActual

The pair of lanthanoid ions which are diamagnetic is

Options

  1. ACe ³⁺ and Eu ²⁺
  2. BGd ³⁺ and Eu ³⁺
  3. CPm ³⁺ and Sm ³⁺
  4. DCe ⁴⁺ and Yb ²⁺

Correct answer

D. Ce ⁴⁺ and Yb ²⁺

Step-by-step solution

Magnetic moment = n(n+2) n number of unpaired electron Hence Ce ⁴⁺ and Yb ²⁺ are only diamagnetic.

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