Chapter 17, Problem 111A

Interpretation Introduction

Interpretation: The difference between a polar covalent bond and a non-polar covalent bond is to be explained. The type of bond between molecular oxygen and carbon monoxide is to be mentioned.

Concept Introduction: Covalent bond includes the exchanging of electrons between atoms to create electron pairs. These electron couples are referred to as bonding pairs or sharing pairs.

Answer to Problem 111A

A polar covalent bond means the electrons are not equally shared whereas, in non-polar bonds, electrons are equally shared. The type of bond in molecular oxygen is non-polar and in carbon monoxide is polar.

Explanation of Solution

Given Information: There are two types of covalent bonds- polar and non-polar.

When two atoms share a pair of electrons unequally due to difference in their electronegativities are known as a polar covalent bond. Unequal distribution causes the bonded atoms to acquire fractional positive and negative charges. Non-polar covalent bonds are formed by equal sharing of electrons. It occurs when two atoms with the same electron affinities come together.

Conclusion

A polar covalent bond means the electrons are not equally shared whereas, in non-polar bonds, electrons are equally shared. The type of bond in molecular oxygen is non-polar and in carbon monoxide is polar.