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Which of the following lanthanoid ions, has zero magnetic moment ? [Ce (z = 58), Sm (z = 62), Eu (z = 63), Yb (z = 70)]`A. `Sm^(2+)`B. `Eu^(2+)`C. `Yb^(2+)`D. `Ce^(2+)` |
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Answer» Correct Answer - C `{:(Sm^(2+) [(Xe) 4F^(6)],,Eu^(2+) [(Xe) 4F^(7)],),(Yb^(2+)[(Xe)4F^(14)],,Ce^(2+)[(Xe)4F^(1)5d^(1)],):}` |
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