Chapter 3.7, Problem 3.10P

(a)

Interpretation Introduction

Interpretation:

Lewis structure for ethane, ${\text{C}}_{\text{2}}{\text{H}}_{\text{6}}$ should be drawn.

Concept Introduction:

Lewis electron-dot symbol is a structure of a molecule that shows the bonding between atoms as well as lone pairs of electrons of atoms.

Valence electrons: The number of electrons present in the outer most energy level of an atom is known as valence electrons. This can be calculated by the group number of the element. Generally, the group number is the same as the valence electrons of an atom of an element.

(b)

Interpretation Introduction

Interpretation:

Lewis structure for Chloromethane, ${\text{CH}}_{\text{3}}\text{Cl}$ should be drawn.

Concept Introduction:

The substance having a similar atom is called an element. When two or more elements combined together chemically they form a pure substance called a compound. But in the case of a mixture, it is formed when two substances joined together without any chemical bonding. An example of a compound is H₂O, and an example of an element is N, an example of a mixture is a mixture of sand and sugar.

(c)

Interpretation Introduction

Interpretation:

The Lewis structure for Hydrogen cyanide, $\text{HCN}$ should be drawn.

Concept Introduction:

The substance having a similar atom is called an element. When two or more elements combined together chemically they form a pure substance called a compound. But in the case of a mixture, it is formed when two substances joined together without any chemical bonding. An example of a compound is H₂O, and an example of an element is N, an example of a mixture is a mixture of sand and sugar.