Chapter 8, Problem 8.85QP

Interpretation Introduction

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

Concept introduction: The elemental composition of $\text{HCN}$ and $\text{HNC}$ is same, but the hydrogen atom in $\text{HNC}$ is bonded to the nitrogen atom.

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 $\text{HCN}$, $\text{HNC}$ and formal charge on each atom.