This is a multiple choice question so you can just give me the letter of the answer. This is one question with 5 parts so it is not against guidelines to answer all 5 parts. 19. A photon having an energy of 9.40 electronvoltsstrikes a hydrogen atom in the ground state.Why is the photon not absorbed by thehydrogen atom?(1) The atom's orbital electron is movingtoo fast.(2) The photon striking the atom is movingtoo fast.(3) The photon's energy is too small.(4) The photon is being repelled by electrostaticforce.20B.thTI20. Which transition between the energy levels of amercury atom causes the emission of a photonof highest frequency?(1) e to d (2) e to c (3) c to b (4) b to a* 21. White light is passed through a cloud of coolhydrogen gas and then examined with aspectroscope. The dark lines observed on abright background are caused by(1) the hydrogen emitting all frequencies in thewhite light(2) the hydrogen absorbing certain frequenciesof the white light(3) diffraction of the white light(4) constructive interference22. It is possible for an excited hydrogen atomto return to the ground state by the emissionof a single photon. Regardless of the initialexcited state, this electron transition producesa spectral line in which region of theelectromagnetic spectrum?(1) ultraviolet(2) infrared(3) visible light(4) radio wavessir 23. An electron in a mercury atom changes fromenergy level b to level e. This energy-levelchange occurs as the atom(1) absorbs a 2.03-eV photon(2) absorbs a 5.74-eV photon(3) emits a 2.03-eV photon(4) emits a 5.74-eV photon

Answered: 19. A photon having an energy of…

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