Most common oxidation states of Ce (cerium) are
As we learnt in
Oxidation states -
The common oxidation state of lanthanoid is +3 low occasionally +2 and +4 ions in solution or in the solid compound are also obtained.
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Electronic configuration of Ce is [Xe] uf 2 ,6s2 due to which it shows +3 and +4 oxidation state.
Option 1)
This option is incorrect.
Option 2)
This option is incorrect.
Option 3)
This option is correct.
Option 4)
This option is incorrect.
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