Which one of the lanthanoids given below is the most stable in divalent form? +2 7 +2 14 +2 +2 (A) Ce (Atomic Number 58) (B) Sm (Atomic Number 62) (C) Eu (Atomic Number 63) (D) Yb (Atomic Number 70)

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Question

Which one of the lanthanoids given below is the most stable in divalent form? +2 7 +2 14 +2 +2

(A) Ce (Atomic Number 58)
(B) Sm (Atomic Number 62)
(C) Eu (Atomic Number 63)
(D) Yb (Atomic Number 70)

Prashant Kotian · Accepted Answer

Correct answer: C) EU (ATOMIC NUMBER 63). Eu is 4f Yb is 4f but Eu is more stable than Yb because

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