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Which one of the following statements re...

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 form Pr to Lu.

C

All the lanthanons are much more reactive than aluminium

D

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

Text Solution

Verified by Experts

The correct Answer is:
B

The basicity decreases as the ionic radius decreases form `Ce^(3+)` to `Lu^(3+)` . Thus `Ce(OH)_(3)` is the strongest base while `Lu(OH)_(3)` is the weakest base.
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    A
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