Chapter 16, Problem 85E

(a)

Interpretation Introduction

To determine: The best Lewis structure for ${\text{HCO}}_2^{-}$ ion.

(b)

Interpretation Introduction

To determine: If resonance structures are needed to describe the structure of the formate ion.

(c)

Interpretation Introduction

To determine: The $\text{C}-\text{O}$ bond length in the formate ion is shorter or longer relative to those in ${\text{CO}}_{\text{2}}$