Question

Which of the following alkaline-earth metal hydroxides is the strongest base.

• A. $Be(OH)_{2}$
• B. $Mg(OH)_{2}$
• C. $Ca(OH)_{2}$
• D. $Ba(OH)_{2}$

Answer 1

Answer: (D)

$Ba(OH)_{2}$

Answer 2

$Be(OH)_{2} < Mg(OH)_{2} < Ca(OH)_{2} < Sr(OH)_{2} < Ba(OH)_{2}$

On moving down the group basic character increases.