Question

An element X occurs in short period having configuration ns2 np1 . The formula and nature of its oxide are:

Answer 1

formula X2O
nature will basic

Answer 2

Answer: The oxide formed will have a formula of $X_2O_3$ and will be a basic oxide.

Explanation: We are given an element having electronic configuration as $ns^2np^1$, which means that the valency of element X is 3.

We know that the valency of Oxide ion is 2.

Hence, the formula becomes $X_2O_3$

From the electronic configuration, it is visible that the element belongs to the 3rd group of periodic table and is a metal.

The oxide formed from a metal is a basic oxide.