What are the (a) energy, (b) magnitude of the momentum, and (c) wavelength of the photon emitted when a hydrogen atom undergoes a transition from a state with n = 5 to a state with n = 4? (a) Number l Units V (b) Number a Units v (c) Number l Units V A cubical box of widths Lx = Ly = Lz = L contains an electron. What multiple of h2/8mL2, where m is the electron mass, gives (a) the energy of the electron's ground state, (b) the energy of its first excited state, and (c) the difference between the energies of its first and third excited states? How many degenerate states have the energy of (d) the first excited state and (e) the fifth excited state? (a) Number Units (b) Number Units (c) Number Units (d) Number Units Number UnitsAn electron is contained in the rectangular corral of the figure, with widths Lx = 500 pm and Ly = 1000 pm. What is the electron's ground-state energy? Corral Number Units