Consider the following energy levels of a hypothetical atom: E4:1.411019JE3:5.311019JE2:1.151018JE1:1.551018J Part 1 of 3 What is the waveiength of the photen needed to excite an electron from E1 to E4 ? Pound your answer to 3 significant digits. What is the energy (in joules) a photon must have in order to excite an electron from E2 to E3 ? Round your answer to 3 significant digits. Pait 3 of 3 When an electron drogs from the E3 level to the E1 level, the atom is said to undergo emission. Calculate the wavelength of the photon emitted in this process. Round your answer to 3 significant digits