InterviewSolution
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InterviewSolution
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Which of the following lanthanoids ions is diamagnetic?A. `Sm^(2+)`B. `Eu^(2+)`C. `Ce^(2+)`D. `Yb^(2+)` |
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Answer» Correct Answer - D Lanthanoid ion with no unpaired electrons is diamagnetic in nature. `Ce_(58)=[Xe]4f^(2)5d^(0)6s^(2)` `Ce^(2+)=[Xe]4f^(2)`(two unpaired electrons ) `Sm_(62)=[Xe]4f^(6)5d^(0)6s^(2)` `Sm^(2+)=[Xe]4f^(6)`(six unpaired electron) `Eu_(63)=[Xe]4f^(7)5d^(0)6s^(2)` `Eu^(2+)=[Xe]4f^(7)`(seven unpaired electron) `Yb_(70)=[Xe]4f^(14)5d^(0)6s^(2)` `Yb^(2+)=[Xe]4f^(14)`(no unpaired electrons) `:. Yb^(2)` is diamagnetic. |
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