The most stable +2 oxidation state in Lanthanides is
The most stable +2 oxidation state in Lanthanides is
A. Ce
B. Eu
C. Tb
D. Dy
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Correct Answer - B
Electronic configuration of Eu is `[Xe] 4f^7 5d^0 6s^2`
Therefore electronic configuration of `Eu^(+2)` ion will be [Xe] `4f^7 5d^0 6s^0`. It has half -filled `4f^7` stable configuration . Therefore Eu will give stable oxidation state of +2.
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