Chapter 12, Problem 60A

Interpretation Introduction

Interpretation:

The covalent bond is to be discussed based on atoms forming the bond.

Concept introduction:

Covalent bond is formed by sharing of electrons between the atoms forming the bonds.

It is of two types:

Polar covalent bond

Non-polar covalent bond

Answer to Problem 60A

Polar covalent bond is formed between two different molecules.

Non-polar covalent bond is between two same molecules.

Explanation of Solution

Example:

The bond formed in $H_2$ is pure covalent bond and bond formed in $HCl$ is polar covalent bond.

The bond formed is polar when there is electronegativity difference between the atoms forming the bond due to which atoms gets polarity.

More electronegative atom acquires partially negative charge and less electronegative atom acquires partial positive charge.

Conclusion

Thus polar covalent bond has some ionic character but covalent bond is purely non-polar.