5- The picture shows the energy levels for an electron n=1, n=2 and n=3 confined to a
potential well L=120 pm.
a) If the electron de-excites from E3 to E2, it emits a light as
shown in the picture. What is the wavelength of this light?
b) Imagine that electron is in the second excited state, E3, Draw
the possible excitations form higher level to lower level on
the figure.
c) If n=2, how many possible values exist for my ? Write.
I only need part (a) and (d)
