Question

Cerium (Z = S8) is an important member of lanthanoids. Which of the following statements about cerium is incorrect?

Options

• The +4 oxidation state of cerium is not known in solutions.

• The +3 oxidation state of cerium is more stable than the +4 oxidation state.

• The common oxidation states of cerium are +3 and +4.

• Cerium (IV) acts as an oxidizing agent.

Answer 1

The +4 oxidation state of cerium is not known in solutions.