Chapter 8, Problem 15P

(a)

To determine

To show that a general expression for the allowed energies of a one electron atom with atomic number $Z$ is: $E_n=-\frac{\mu k^2{e}^4}{2{\hslash }^2}\left\{\frac{Z^2}{n^2}\right\}$ .

(b)

To determine

Then wavelength of this same transition in singly ionized helium and in positronium.