Chapter 2, Problem 2E

(a)

Interpretation Introduction

Interpretation:

The better Lewis structure for ${\text{CO}}_2$ should be selected and the reasoning should be explained.

Concept Introduction :

Rules for determining the best Lewis structure

1. Smaller formal charges are preferred over larger formal charges
2. Negative formal charges should reside on more electronegative atoms
3. Like charges should not reside closer to each other.

Formal charge can be determined by following formula.

  $\text{Formal charge = Group number - No}\text{. lines - No}\text{. of dots}$

(b)

Interpretation Introduction

Interpretation:

Whether the choice in part (a) is consistent with the experimental data should be discussed.

Concept Introduction :

Rules for determining the best Lewis structure:

1. Smaller formal charges are preferred over larger formal charges
2. Negative formal charges should reside on more electronegative atoms
3. Like charges should not reside closer to each other.