Q. Cerium $(Z = 58)$ is an important member of the lanthanides. Which of the following statement about cerium is incorrect?
A) The common oxidation states of cerium are +3 and +4
B) Cerium (IV) acts as an oxidizing agent
C) The +4 oxidation state of cerium is not known in solutions
D) The +3 oxidation state of cerium is more stable than the +4 oxidation state
Explanation
The correct answer is Option C: The +4 oxidation state of cerium is not known in solutions.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.