Q. 274.0( 2 Votes )

Which of the following lanthanoids show +2 oxidation state besides the characteristic oxidation state +3 of lanthanoids?
A. Ce

B. Eu

C. Yb

D. Ho

Answer :

Electronic configurations of Eu and Yb are


Eu- [Xe] 4f7 5d0 6s2


Yb- [Xe] 4f14 5d0 6s2


Both show oxidation state of +2 besides the +3 oxidation state

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