Question

Ionic bond is present in which of the following species:-a) Sodium bromide
b) Sulfur trioxide
C) Hydrogen chloride
D) Carbon monoxide

Answer 1

We have to know that in chemistry, chemical bonds are three types of classification. This classification is based on electron binding in the bond. There are covalent bonds, ionic bonds and coordinate bonds. The covalent bond is nothing but the mutually sharing of electrons between the two atoms in the molecule. The ionic bond is nothing but highly electronegativity pulls the electrons towards itself, least electronegativity atoms lose the electrons in the molecule. The coordinate bond is nothing but the pair of the electrons from one atom to another atom in the molecule. It is mainly seen in coordination chemistry.

Complete answer:
The list given molecules are below,
Sodium bromide
Sulfur trioxide
Hydrogen chloride
Carbon monoxide
The molecular formula of Sodium bromide is $NaBr$.
The molecular formula of Sulfur trioxide is $S{O_3}$.
The molecular formula of Hydrogen chloride is $HCl$.
The molecular formula of Carbon monoxide is $CO$.
Sodium bromide is formed due to the ionic bond. Sulfur trioxide and carbon monoxide are formed due to the covalent bond and hydrogen chloride is formed due to the polar covalent bond.
According to the above discussion, we conclude ionic bond is present in Sodium bromide.

So, the correct answer is “Option A”.

Note:
We have to know that the electronegativity difference in the bonded atom plays a vital role whether the bond is ionic or covalent or polar covalent bond. The electronegativity difference between the bonded atom is lesser than $1.7$, means it consider as covalent bond. If the electronegativity difference between the bonded atom is equal to $1.7$, means it consider as polar covalent bond. If the electronegativity difference between the bonded atom is greater than $1.7$, means it consider as polar bond.