Question

An element $X$ in the third period has a configuration $n{s}^{2}n{p}^1$. The formula and nature of its oxide is:

• A. $X{O}_3,\text{amphoteric}$
• B. $X{O}_3,\text{acidic}$
• C. $X_2{O}_3,\text{amphoteric}$
• D. $X_2{O}_3,\text{basic}$

Answer 1

The correct option is C $X_2{O}_3,\text{amphoteric}$

From the electronic configuration, we can say that the element belongs to the ${13}^{th}$ group in the periodic table. The oxide is $A{l}_2{O}_3$ . This oxide has the property of reacting with both acids as well as bases to form salts so it is amphoteric in nature.