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Question

Which of the following lanthanoid ions is diamagnetic?


A
Sm2+
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B
Ce2+
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C
Yb2+
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D
Eu2+
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Solution

The correct option is D $$Yb^{2+}$$
$$\displaystyle Yb^{2+} $$ is diamagnetic as it lacks unpaired electrons.
$$\displaystyle Yb$$ has outer electronic configuration of $$\displaystyle 4f^{14}5d^06s^2$$.
$$\displaystyle Yb^{2+}$$ has outer electronic configuration of $$\displaystyle 4f^{14}5d^06s^0$$

Chemistry

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