alleryStart learning →Which pair forms the most stable dipositive lanthanoid ions?
AEu2+ and Yb2+
BLa2+ and Lu2+
CCe2+ and Pr2+
DGd2+ and Tb2+
Answer & Solution
Correct answer: A. Eu2+ and Yb2+
Eu2+ is f7 and Yb2+ is f14, which are half-filled and filled arrangements.
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