06.
Using the Rydberg formula, calculate the wavelengths of the first four spectral lines in the Balmer series of the hydrogen spectrum.
Suggested solution:
The Rydberg formula is
The wavelengths of the first four lines in the Balmer series correspond to transitions from ni = 3,4,5,6 to nf = 2.
We know
Substituting,
ni = 3, 4, 5 and 6, we get
