Chapter 6, Problem 19E

The electron volt (eV) is a convenient unit of energy for expressing atomic-scale energies. It is the amount of energy that an electron gains when subjected to a potential of 1 volt; $1\text{eV}=1.602\times {10}^{-19}$ J. Using the Bohr model, determine the energy, in electron volts, of the photon produced when an electron in a hydrogen atom moves from the orbit with $n=5$ to the orbit with $n=2$. Show your calculations.