The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state? 1 1 2 +4 0 0 0 (A) Ce (At. No. 58) (B) La (At. No. 57) (C) Lu

Question

The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state? 1 1 2 +4 0 0 0

(A) Ce (At. No. 58)
(B) La (At. No. 57)
(C) Lu (At. No. 71)
(D) Gd (At. No. 64)

Prashant Kotian · Accepted Answer

Correct answer: A) CE (AT. NO. 58). Cerium is likely to deviate from its +3 oxidation state because it attains noble gas configuration is +4 oxidation state Ce – [Xe] 4f 5d 6s Ce – [Xe] 4f 5d 6s

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