In context of the lanthanoids, which of the following statements is not correct ?

Engineering

Chemistry

f Block Elements and Properties

Lanthanide Contraction

Question

In context of the lanthanoids, which of the following statements is not correct ?

A

There is gradual decrease in the radii of the members with increasing atomic number in the series.

B

Availability of 4f electrons results in the formation of compounds in + 4 state for all the members of the series

C

All the members exhibit + 3 oxidation state.

D

Because of similar properties the separation of lanthanoids is not easy.

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Availability of 4f electrons donot results in the formation of compounds in +4 state for all the members of the series.