Question

An electron in a hydrogen atom absorbs 5.31 times 10^-20 J of energy. If the electron originated at energy level 5, to what level was it excited? When holding the diffraction grating to observe the visible spectra, in what orientation should it be held? (Your answer should only be a single word.) When collecting the spectra of hydrogen and mercury, where should the end of the optical fiber be held? Near the middle of the narrow region for both. Near the narrow region of mercury and at the fat end of the hydrogen. Near the narrow region of hydrogen and at the fat end of mercury. By the fat end of both.

Answer 1