Question

Oxide of which group 13 element is acidic in nature:

• A. $B$
• B. $Al$
• C. $Ga$
• D. $In$

Answer 1

The correct option is A $B$

Option $\left(A\right)$ is correct.

Oxide of boron is acidic in nature. Boron is a non-metal and oxides of non-metals acidic in nature.Boron oxide is acidic and reacts with water to form an acid, boric acid. So, it is an acidic oxide.

$B_2{O}_3+3H_{2}O\to 2B(OH{)}_3$

While moving down the group, acidic strength decreases and basic strength increases, thus the acidic character of oxides decreases down the group.

Oxides of other elements of the group are amphoteric and basic in nature.