Which one of the following statements related to lanthanons is incorre

1.	Which one of the following statements related to lanthanons is incorrect? (a) Europium shows +2 oxidation state. (b) The basicity decreases as the ionic radius decreases from Pr to Lu. (c) All the lanthanons are much more reactive than aluminium. (d) Ce4+ solutions are widely used as oxidising agents in volumetric analysis.
Answer» (c) All the lanthanons are much more reactive than aluminium. As we move from La to Lu , their metallic behaviour because almost similar to that of aluminium.

Which one of the following statements related to lanthanons is incorrect? (a) Europium shows +2 oxidation state. (b) The basicity decreases as the ionic radius decreases from Pr to Lu. (c) All the lanthanons are much more reactive than aluminium. (d) Ce4+ solutions are widely used as oxidising agents in volumetric analysis.

Answer»

As we move from La to Lu , their metallic behaviour because almost similar to that of aluminium.