Question
Chemistry Question on p -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
Ce(At. No. 58)
Explanation
Solution
The correct answer is (A): Ce(At. No. 58)
Explanation:
Ce → [Xe]4f1 5d1 6s2
Ce+4 → [xe] 4f° 5d° 6s°
Cerium in +4 oxidation state acquires inert gas configuration.