Question

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. Ce (+4) solutions are widely used as oxidizing agent in volumetric analysis

Answer 1

Answer: (C)

The earlier number of lanthenoide series are quiet reactive similar to calcium but with increasing atomic number they behave more like aluminium