Chapter 9, Problem 104E

Interpretation Introduction

Interpretation:

The wavelength of light emitted by the hydrogen atoms should be determined when its electron makes the transition from $n=4$ to $n=2$.

Concept introduction:

According to the theory given by Max Planck, the emitted radiation is a result of electron transition between the orbitals.

The wavelength of light can be calculated by the following expression of energy:

$\begin{array}{l}E=\frac{hc}{\lambda }\\ \text{or}\\ \lambda =\frac{hc}{E}\end{array}$

Here, $E$ is the energy, $c$ is the velocity of light, $\lambda$ is the wavelength, and $h$ is the Planck’s constant.