A schematic of the energy levels of a hypothetical atom is shown below. An electron has been excited from energy level 1 to energy level 5 by absorbing a photon.
a. Which transition to lower energies represents the smallest energy change?
b. Which transition, as shown, is not possible?
c. Which of the transitions resulting in an emission line represents the reddest wavelength?
d. Which of the transitions resulting in an emission line represents the bluest wavelength?
e. Which of the transitions resulting in an emission line results in a photon with the same energy as that absorbed originally?