Question
In the context of the lanthanoids, which of the following statement is not correct?
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There is a gradual decrease in the radii of the members with increasing atomic number in the series.
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All the member exhibit +3 oxidation state.
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Because of similar properties, the separation of lanthanoids is not easy.
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Availability of 4f electrons results in the formation of compounds in +4 state for all the members of the series.
Solution
D.
Availability of 4f electrons results in the formation of compounds in +4 state for all the members of the series.
