Chapter 42, Problem 23P

(a)

To determine

Show that the difference in wavelength between the hydrogen-1 and deuterium spectral lines associated with a particular electron transition is given by, ${\lambda }_{\text{H}}-{\lambda }_{\text{D}}=\left(1-\frac{{\mu }_{\text{H}}}{{\mu }_{\text{D}}}\right){\lambda }_{\text{H}}$.

(b)

To determine

The difference in wavelength for the Balmer alpha line of hydrogen.