Chapter 21, Problem 59PS

Interpretation Introduction

Interpretation: To draw the Lewis structure of ${\text{N}}_{\text{2}}\text{O}$ and predict the $\text{N-N}$ bond order.

Concept introduction:

Lewis structures are diagrams that represent the chemical bonding of covalently bonded molecules and coordination compounds.

It is also known as Lewis dot structures which represent the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

The Lewis structure is based on the concept of the octet rule so that the electrons shared in each atom should have 8 electrons in its outer shell.

The general formula of oxides of nitrogen is ${\text{N}}_{\text{x}}{\text{O}}_{\text{y}}$ Thedecomposition reaction is:

    ${\text{N}}_{\text{x}}{\text{O}}_{\text{y}}\to \frac{\text{x}}{\text{2}}{\text{N}}_{\text{2}}\text{+}\frac{\text{y}}{\text{2}}{\text{O}}_{\text{2}}$

Some of the common oxides of nitrogen are $\text{NO}$, ${\text{NO}}_{\text{2}}$, ${\text{N}}_{\text{2}}\text{O}$ and ${\text{N}}_{\text{2}}{\text{O}}_{\text{4}}$. All of them have different structures. The $\text{N-N}$ bond order in them is also different.

Bond order: It is the measure of number of electron pairs shared between two atoms.