Q. Cerium (Z = 58) is an important member of the lanthanides. Which of the following statements about cerium is incorrect?
A) The common oxidation state of cerium are +3 and +4.
B) The +3 oxidation state of cerium is more stable than the +4 oxidation state.
C) The +4 oxidation state of cerium is not known in solutions.
D) Cerium (IV) acts as an oxidizing agent.
Explanation
(c)
+3 and +4 states are shown by Ce in aqueous solutions. Thus statement (c) is incorrect.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.