Question

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

• A. , basic
• B. , acidic
• C. X₂O₃ amphoteric
• D. X₂O₃, basic

Answer 1

The correct option is C

X₂O₃ amphoteric

We know that, oxidation state of O = -2

Oxidation state of X here = +3

Now, to make the compound neutral.

It should be equal in '+' and '-' charge

So, $X_2{O}_3$

And because it has configuration $n{s}^{2}n{p}^1$.

It will belong to group 13.

Group 13 elements are amphoteric in nature.

Therefore, $X_2{O}_3$, amphoteric.