Easy MCQ +4 / -1 PYQ · JEE Mains 2024

Diamagnetic Lanthanoid ions are :

  1. A $\mathrm{La}^{3+} \& \mathrm{~Ce}^{4+}$ Correct answer
  2. B $\mathrm{Nd}^{3+} \& \mathrm{~Ce}^{4+}$
  3. C $\mathrm{Lu}^{3+} \& \mathrm{~Eu}^{3+}$
  4. D $\mathrm{Nd}^{3+} \& \mathrm{~Eu}^{3+}$

Solution

<p>$$\mathrm{Ce}:[\mathrm{Xe}] 4 \mathrm{f}^1 5 \mathrm{~d}^1 6 \mathrm{~s}^2 ; \mathrm{Ce}^{4+}$$ diamagnetic</p> <p>$$\mathrm{La}:[\mathrm{Xe}] 4 \mathrm{f}^0 5 \mathrm{~d}^1 6 \mathrm{~s}^2 ; \mathrm{La}^{3+}$$ diamagnetic</p>

About this question

Subject: Chemistry · Chapter: d and f Block Elements · Topic: Properties of Transition Metals

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