Which of the following is the weakest base?

Question

Which of the following is the weakest base? (A)  Ca(OH)2  (B) KOH (C)  Li(OH)  (D)  Sr(OH)2

Tardigrade Admin · Accepted Answer

Basic character of hydroxides of s-block elements increase with increasing atomic number. However alkaline earth metal hydroxides are less basic than alkali metal hydroxides. Therefore, Li(OH) is the weakest base.

Q. Which of the following is the weakest base?

$C a (O H)_{2}$

$K O H$

$L i (O H)$

$S r (O H)_{2}$

Basic character of hydroxides of $s$ -block elements increase with increasing atomic number. However alkaline earth metal hydroxides are less basic than alkali metal hydroxides. Therefore, $L i (O H)$ is the weakest base.