The Balmer series describes the transitions of electrons in the
hydrogen orbits from some initial orbital with ni > 2 and the
final orbital with nf = 2. If an electron in a hydrogen atom decays
from the n = 3 to n = 2 orbit, which is a transition from the
Balmer series, what is the energy of the photon emitted (in eV)?
Give the result to two decimal places.