An element $X$ occurs in short period having configuration $n{s}^{2}n{p}^1$. The formula and nature of its oxide is :

An element $X$ occurs in short period having configuration $n{s}^{2}n{p}^1$. The formula and nature of its oxide is ${\mathrm{X}}_2{\mathrm{O}}_3$, amphoteric.

The arrangement of the III A (B) group components is $n{s}^2{\mathrm{np}}^1$. They produce type $X_2{\mathrm{O}}_3$ oxides, which should either be B or Al because it belongs to the short chain. B produces acidic oxides, whereas Al produces amphoteric oxides.

Hence, option C is correct.