CHEMISTRY · Single correct · CBSE · Chemistry · d- and f-Block Elements · d- and f-Block Elements
Problem
In the context of the lanthanoids, which of the following statements is not correct?
(1) Availability of 4f electrons results in the formation of compounds in the +4 state for all members of the series.
(2) There is a gradual decrease in the radii of the members with increasing atomic number in the series.
(3) All the members exhibit the +3 oxidation state.
(4) Because of similar properties, separation of lanthanoids is not easy.