Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect? Options: A . &nbspThe +4 oxidation state of cerium is not known in solutions B . &nbspThe +3 oxidation state of cerium is more stable than the +4 oxidation state C . &nbspThe common oxidation states of cerium are +3 and +4 D . &nbspCerium (IV) acts as an oxidizing agent.

Cerium (Z = 58) is an important member of the lanthanoids. Which of t

Question

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?

Options:

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

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

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

D . Cerium (IV) acts as an oxidizing agent.

Answer: Option A
:
A
(+4) oxidation state of cerium is also known in solution.The formation of Ce(+4) is favoured by its noble gas configuration, but it is a strong oxidant reverting to thecommon +3 state.

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