The allowed energies of a simple atom are 0.0 eV, 4.0 eV, and 6.0 eV.Part A. What wavelength(s) appear(s) in the atom's emission spectrum? If there is more than one answer, enter your answers in ascending order separated by commas.Part B. What wavelength(s) appear(s) in the atom's absorption spectrum? If there is more than one answer, enter your answers in ascending order separated by commas.