According to the equation for the Balmer line spectrum of hydrogen, a value of n=3 gives a red spectral line at 656.3 nm, a value of n=4 gives a green line at 486.1 nm, and a value of n=5 gives a blue line at 434.0 nm. According to these values, the wavelength differences between lines in the Balmer series become smaller as n becomes larger. In other words, the wavelengths converge toward a minimum value as n becomes very large.
At what wavelength (in nanometers) do the lines converge?