Question

# Which of the following lanthanoid ions is diamagnetic?

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

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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