Question
Chemistry Question on d -and f -Block Elements
Which of the following statement is not correct
A
La(OH)3 is less basic than Lu(OH)3
B
) In Lanthanide series ionic radius of Ln^+3 ions decreases
C
La is actually an element of transition series rather Lanthanide
D
Aomic radius of Zr and Hf are same because of Lanthanide contraction
Answer
La(OH)3 is less basic than Lu(OH)3
Explanation
Solution
The correct option is(A): La(OH)3 is less basic than Lu(OH)3. La(OH)3 exhibits greater basicity compared to Lu(OH)3. In the lanthanide series, the basicity of hydroxides diminishes as the ionic radius decreases.