Which of the following statements is not correct

Options

A. `La(OH)_(3)` is less basic then `Li(OH)_(3)`
B. In lanthaniode series, ionic radius of `Ln^(3+)` ion decreases.
C. La is actually an element of transition series rather than langthaniodes.
D. Atomic radius of Zn and Hf are same because of lanthaniode contraction.

Answer

1

Explanation

`La(OH)_(3)` is more basic than `Li(OH)_(3)` . In lanthaniodes the basic character o fhydroxides decreases as the ionic radius decreases.