Which of the following is an amphoteric hydroxide?
(1) Sr(OH)2
(2) Ca(OH)2
(3) Mg(OH)2
(4) Be(OH)2
Correct option (4) Be(OH)2
Explanation:
Be(OH)2 amphoteric in nature, since it can react both with acid and base
Be(OH)2 + 2HCl → BeCl2 + 2H2O
Be(OH)2 + 2NaOH → Na2 [Be(OH)4]
