Cerium (Z = 58) is an important member o...

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

A

The common oxidation states of cerium is `+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 oxidising agent

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The correct Answer is:

C

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