Chemistry · PYQ NEET UG 2024

The pair of lanthanoid ions which are diamagnetic is

1. A
   \( \text{Gd}^{3+} \) and \( \text{Eu}^{3+} \)
2. B
   \( \text{Pm}^{3+} \) and \( \text{Sm}^{3+} \)
3. C
   \( \text{Ce}^{4+} \) and \( \text{Yb}^{2+} \)
4. D
   \( \text{Ce}^{3+} \) and \( \text{Eu}^{2+} \)