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QNEET-2013-Ch-1460: NEET 2013 Chemistry - Class 12 NEET-2013-Ch-1460 Solution: Which of the following lanthanoid ions is diamagnetic? (At.…
Which of the following lanthanoid ions is diamagnetic? (At. nos. Ce = 58 Sm = 62 Eu = 63 Yb = 70)
Multiple Choice Options
- A Eu 2+
- B Yb 2+
- C Ce 2+
- D Sm 2+
Step-by-Step Verified Solution
Ion with no unpaired electron is diamagnetic
in nature.
Ce 2+ = [Xe] 4f 2 _ 2 unpaired electrons
Sm 2+ = [Xe] 4f 6 _ 6 unpaired electrons
Eu 2+ = [Xe] 4f 7 _ 7 unpaired electrons
Yb 2+ = [Xe] 4f 14 _ No unpaired electron