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Question

Chemistry Question on GROUP 1 ELEMENTS

Which of the following is an amphoteric hydroxide ?

A

Mg(OH)2Mg(OH)_2

B

Be(OH)2Be(OH)_2

C

Sr(OH)2Sr(OH)_2

D

Ca(OH)2Ca(OH)_2

Answer

Be(OH)2Be(OH)_2

Explanation

Solution

Be(OH)2 {Be(OH)2} amphoteric in nature, since it can react both with acid and base Be(OH)2+2HCl−>BeCl2+2H2O {Be(OH)_2 + 2HCl -> BeCl_2 + 2H_2 O} Be(OH)2+2NaOH−>Na2[Be(OH)4] { Be(OH)_2 + 2NaOH -> Na_2 [Be(OH)_4]}