JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
The most common oxidation state of Lanthanoid elements is \(+3\). Which of the following is likely to deviate easily from \(+3\) oxidation state?
- A \(Ce\) (At. No. \(58\))
- B \(La\) (At. No. \(57\))
- C \(Lu\) (At. No. \(71\))
- D \(Gd\) (At. No. \(64\))
Answer & Solution
Correct Answer
(A) \(Ce\) (At. No. \(58\))
Step-by-step Solution
Detailed explanation
\(Ce =[ Xe ] 4 f ^{1} 5 d ^{1} 6 s ^{2}\) \(Ce ^{3+}=[ Xe ] 4 f ^{1} 5 d ^{0}\) \(Ce ^{+4}=[ Xe ] 4 f ^{0} 5 d ^{0}\) (Noble gas configuration)
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