Which of the following statements is not correct?

Question

Which of the following statements is not correct? (A) La(OH)3 is less basic than Li(OH)3  (B) In lanthanide series, ionic radius of Ln3+ ion decreases (C) La is actually an element of transition series rather lanthanide (D) Atomic radius of Zr and Hf are same because of lanthanide contraction

Tardigrade Admin · Accepted Answer

La 3+ ions larger than Li 3+, So, it easily gives OH -ion La ( OH )3 is more basic than Li ( OH )3. In lanthanides the basic character of hydroxides decreases as the ionic radius decreases.

Q. Which of the following statements is not correct?

$L a (O H)_{3}$ is less basic than $L i (O H)_{3}$

In lanthanide series, ionic radius of $L n^{3 +}$ ion decreases

La is actually an element of transition series rather lanthanide

Atomic radius of Zr and Hf are same because of lanthanide contraction

$L a^{3 +}$ ions larger than $L i^{3 +}$ , So, it easily gives $O H^{-}$ ion $L a (O H)_{3}$ is more basic than $L i (O H)_{3}$ . In lanthanides the basic character of hydroxides decreases as the ionic radius decreases.

Q. Which of the following statements is not correct?

La(OH)3​ is less basic than Li(OH)3​

In lanthanide series, ionic radius of Ln3+ ion decreases

La is actually an element of transition series rather lanthanide

Atomic radius of Zr and Hf are same because of lanthanide contraction

La3+ ions larger than Li3+, So, it easily gives OH−ion La(OH)3​ is more basic than Li(OH)3​. In lanthanides the basic character of hydroxides decreases as the ionic radius decreases.

$L a (O H)_{3}$ is less basic than $L i (O H)_{3}$

In lanthanide series, ionic radius of $L n^{3 +}$ ion decreases

$L a^{3 +}$ ions larger than $L i^{3 +}$ , So, it easily gives $O H^{-}$ ion $L a (O H)_{3}$ is more basic than $L i (O H)_{3}$ . In lanthanides the basic character of hydroxides decreases as the ionic radius decreases.