Cerium (Z= 58) is an important nember of...

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

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

The `+3` oxdiation 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

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The correct Answer is:

`+4` oxidation state of cerium is also known in solution.

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