Question

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

Answer 1

C IS CORRECT ANSWER............

Answer 2

${\huge {\mathfrak {Answer :-}}}$

➡️ Option (C)

That's it..