Question

Which of the following hydroxide is insoluble in water.

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

Answer 1

Answer: (A)

$Be(OH)_{2}$

Answer 2

The solubility of hydroxides of alkaline earth metals in water increases on moving down the group.