Question

The hydroxide of which of the following element is amphoteric?

• A. $\ce{Al(OH)_3}$
• B. $\ce{B(OH)_3}$
• C. $\ce{In(OH)_3}$
• D. $\ce{TIOH}$

Answer 1

Answer: (A)

$\ce{Al(OH)_3}$

Answer 2

${Al(OH)_3}$ is amphoteric as it reacts with acids as well as bases to form salts. ${B(OH)_3}$ is acid whereas $In {(OH)_3}$ and ${TlOH}$ are basic in character.