Question

Which of the following represents correct acidity order $L{i}_{2}O,BeO$ and $B_2{O}_3$?

• A. $L{i}_{2}O$ < $BeO$ < $B_2{O}_3$
• B. $B_2{O}_3<BeO<L{i}_{2}O$
• C. $BeO<L{i}_{2}O<B_2{O}_3$
• D. $BeO<B_2{O}_3<L{i}_{2}O$

Answer 1

The correct option is A $L{i}_{2}O$ < $BeO$ < $B_2{O}_3$

The chemical nature of oxides of elements changes across the period as
Basic oxide $\to$ Amphoteric oxide $\to$ Acidic oxide Thus, the correct increasing order of acidity is
$L{i}_{2}O<Be0<B_2{O}_3$