Chapter 8, Problem 8.86QP

Interpretation Introduction

Interpretation: The Lewis structure for $\text{HCN}$ and ${\text{HC}}_{\text{3}}\text{N}$ are to be drawn and formal charge on each atom is to be assigned.

Concept introduction: Both $\text{HCN}$ and ${\text{HC}}_{\text{3}}\text{N}$ have been detected in the interstellar regions of space and in comets close to earth.

Formal charge is calculated as,

$\text{Formal}\text{charge}=\text{Valence}\text{electrons}-\left(\text{Lone}\text{pair}\text{electrons}+\frac{1}{2}\text{Bond}\text{pair}\text{electrons}\right)$

To determine: The Lewis structure for $\text{HCN}$, ${\text{HC}}_{\text{3}}\text{N}$ and formal charge on each atom.