8. TRANSITION AND INNER TRANSITION ELEMENTS
1. Choose the most correct option.
x. Which of the following sets of ions contain only paramagnetic ions
a. Sm3⊕, Ho3⊕, Lu3⊕
b. La3⊕, Ce3⊕, Sm3⊕
c. La3⊕, Eu3⊕, Gd3⊕
d. Ce3⊕, Eu3⊕, Yb3⊕
Answer:- Ce3⊕, Eu3⊕, Yb3⊕ sets of ions contain only paramagnetic ions