Suppose two different hydrogen atoms, labeled A and B, have their electrons in state n = 4. Atom A emits light when its electron transitions directly from the n = 4 state to the n = 2 state. Atom B emits light twice, as its electron first transitions from the n = 4 state to the n = 3 state, then transitions from the n = 3 state to the n = 2 state. (a) Are the three wavelengths of light the same or different? (b) How does the energy of the photon from atom A compare to the total energy of the two photons from atom B?
