An electron in a hydrogen atom falls from the n=5 level directly to the n=2 level.
(i) Calculate the energy released in the transition, in electron-volts.
(ii) Determine the approximate wavelength of the emitted photon and state whether it lies in the ultraviolet, visible, or infrared region. (1240eV⋅nm=hc)
a. (i) Energy released
b. (ii) Wavelength and spectral region