Chapter 8, Problem 82A

Interpretation Introduction

Interpretation:

In a molecule, the presence of sigma or pi bond is needs to be explained.

Concept introduction:

Non-ionic compounds share electrons. The bond which results from the formation of electron sharing is termed as covalent bond. In this bonding, the shared pair of electrons are taken from the outermost energy level.

Answer to Problem 82A

All molecules with produces single covalent bond have one sigma bond. The molecules with double bond have one sigma bond and one pi bond. And a molecule with triple bond contains two pi bond and one sigma bond.

Explanation of Solution

Sigma bonds are the single covalent bond. This bond is occurring when the shared electrons pair is in an area centered between the two atoms. An end to end overlapping of valence atomic orbitals takes place, when sharing of electrons between two atoms takes place.

Molecules which have multiple covalent bond consist of both pi and sigma bond.

Conclusion

Covalent bond results due to sharing of electrons pair.