Question

Choose the most correct option.

Which of the following sets of ions contain only paramagnetic ions?

Options

• Sm^3⊕, Ho^3⊕, Lu^3⊕

• La^3⊕, Ce^3⊕, Sm^3⊕

• La^3⊕, Eu^3⊕, Gd^3⊕

• Ce^3⊕, Eu^3⊕, Yb^3⊕

Answer 1

Ce^3⊕, Eu^3⊕, Yb^3⊕