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Q.

The lanthanoid that does not shows +4 oxidation state is

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a

Eu

b

Tb

c

Ce

d

Dy

answer is C.

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Detailed Solution

Given data : It is given to identify  the lanthanoid that does not shows +4 oxidation state is, from the given option

Explanation :

Europium usually has an oxidation state of +3, but it can also have an oxidation state of +2.

Hence, the correct option (C) Eu.

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