Which one of the following is not correct? - Vidyadip

MCQ

Which one of the following is not correct?

✓
$La ( OH )_2$ is less basic than $Lu ( OH )_3$
B
In lanthanoid series ionic radius of $Ln^{3+}$ ions decreases
C
La is actually an element of transition metal series rather than lanthanide series
D
Atomic radii of Zr and Hf are same because of lanthanide contraction

✓

Answer

Correct option: A.

$La ( OH )_2$ is less basic than $Lu ( OH )_3$

$La ( OH )_2$ is less basic than $Lu ( OH )_3$

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