Chapter 7.3, Problem 4PPC

Interpretation Introduction

Interpretation:

The Lewis structures of different type molecules having same molecular formula of ${\text{C}}_2{\text{H}}_6\text{O}$ are needed to be drawn and the intermolecular forces presented in these moleculesshould be determined.

Concept introduction:

• Lewis structures is also known as Lewis dot structures which represents the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
• Polarity of a bond is due to the difference in electro-negativities of atoms presented in it. The polarities of bonds are represented by using vectors.
• If the result of all bond polarities or vector sum is non-zero in a molecule, then the molecule is called as polar molecule.
• If the result of all bond polarities or vector sum is zero in a molecule, then the molecule is called as nonpolar molecule.
• Intermolecular force is the set of repulsive and attractive forces between molecules that result from the polarity between neighboring molecules. There are four types of intermolecular forces.
• Dipole – Dipole interaction: This force takes place between polar compounds.
• Hydrogen bonding is a type of dipole-dipole interaction of molecules when the hydrogen is bonded to strong electronegative atom (F, O, N, etc) in the molecules.
• Dispersion force is a weak force and this force is present in all compounds force.

To determine: Lewis structures of different type molecules having same molecular formula of ${\text{C}}_2{\text{H}}_6\text{O}$.