Which statements about the emission spectrum of atomic hydrogen are correct?

Select all that apply

• Option A

  The line spectrum occurs because the allowed atomic energies are discrete

• Option B

  Lyman-series lines terminate at the ground state and lie mainly in the ultraviolet region

• Option C

  Balmer-series lines terminate at the second level and include visible wavelengths

• Option D

  All hydrogen spectral lines have the same wavelength because all photons travel at the speed of light