Chapter 20, Problem 5PS

(a)

Interpretation Introduction

Interpretation:

Lewis electron dot structure for $HONO$ has to be drawn and the electron pair geometry around oxygen and nitrogen atoms should be indicated.

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.

Dots represent the electron position around the atoms and lines or dot pairs represent covalent bonds between atoms.

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.

(a)

Interpretation Introduction

Interpretation:

The wavelength of light that could cause the molecule to dissociate into the radical should be determined.

Concept introduction:

• The relation between energy, wavelength and frequency is,

        $\text{E}\text{=}\text{hν}\text{=}\frac{\text{hc}}{\text{λ}}$

Where E is the energy, c the velocity of light and its value is $\text{3×10}{}^{\text{8}}\text{m/s}$ $\upsilon and\lambda$ are the velocity and wavelength of light respectively.