One series of lines in the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shells to the fourth shell. The lines can be calculated using the Balmer-Rydberg equation where nf = 4, R∞ = 1.097 × 10-2 nm-l, and ni is an integer greater than 4. Calculate the wavelengths in nanometers and energies in kilojoules per mole (each to 3 sig. figs.) of the first lines in the series. In what region of the electromagnetic spectrum do they fall?