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Although +3 oxidation state is the chara...

Although +3 oxidation state is the characteristic oxidation state of lanthanoids but cerium shows +4 oxidation state also. Why ?

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`+4` state of Ce is stable, because it attains `f^(0)` configuration as well as noble gas like electronic structure.
`Ce([Xe]4f^(1)5d^(1)6s^(2))overset(-4e)rarr Ce^(4+)([Xe]4f^(0))`
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -SOLVED NCERT EXEMPLAR PROBLEMS (Short Answer Type)
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