Chapter 14.9, Problem 21P

(a)

Interpretation Introduction

Interpretation:

The wave number of given radiation should be calculated, that contains wavelength of $\text{4μm}$.

Concept Introduction:

Spectroscopy: it is study of the interaction of matter and electromagnetic radiation, a continuum of different types of electromagnetic radiation each associated with a particular energy range makes up the electromagnetic spectrum.

Electromagnetic radiation: It is characterized as a wave is a by either its frequency $\left(\nu \right)$ or its wavelength $\left(\lambda \right)$.

IR frequency ($c{m}^{-1}$): The radiation ranging $600-4000c{m}^{-1}$ is passed through a sample and is absorbed by the bonds of the molecules in the samples causing them to stretch or bend the wave length of the radiation absorbed is characteristics of the bond absorbing it.  It is the number of wave crests that pass by a given point in one second frequency has units of hertz $\left(Hz\right)$.

Wavelength: It identified the distance from any point on one wave to the corresponding point on the next wave, or its wavelength is generally measured in nanometers (${\text{1 nm=10}}^{\text{-9}}\text{m}$).

(b)

Interpretation Introduction

Interpretation:

The wavelength given radiation should be calculated, that contains wavenumber of $\text{200}{\text{cm}}^{\text{-1}}$.

Concept Introduction:

Spectroscopy: it is study of the interaction of matter and electromagnetic radiation, a continuum of different types of electromagnetic radiation each associated with a particular energy range makes up the electromagnetic spectrum.

Electromagnetic radiation: It is characterized as a wave is a by either its frequency $\left(\nu \right)$ or its wavelength $\left(\lambda \right)$.

IR frequency ($c{m}^{-1}$): The radiation ranging $600-4000c{m}^{-1}$ is passed through a sample and is absorbed by the bonds of the molecules in the samples causing them to stretch or bend the wave length of the radiation absorbed is characteristics of the bond absorbing it.  It is the number of wave crests that pass by a given point in one second frequency has units of hertz $\left(Hz\right)$.

Wavelength: It identified the distance from any point on one wave to the corresponding point on the next wave, or its wavelength is generally measured in nanometers (${\text{1 nm=10}}^{\text{-9}}\text{m}$).