7.83 Lines in one spectral series can overlap lines in another.
(a) Use the Rydberg equation to see if the range of wavelengths
in the n1 1 series overlaps the range in the n1 2 series.
(b) Use the Rydberg equation to see if the range of wavelengths
in the n1 3 series overlaps the range in the n1 4 series.
(c) How many lines in the n1 4 series lie in the range of the
n1 5 series?