NEET 2013 Chemistry question

Which of the following lanthanoid ions is diamagnetic ? (At. No. Ce = 58, Sm = 62, Eu = 63, Yb = 70)

Answer: (4)

Solution

A diamagnetic ion has no unpaired electrons. Write the 4f configurations: (Ce: ) is (or ): unpaired electrons, paramagnetic. (Sm: ) is : six

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-091361