試題詳解

52. The figure shows the energy levels for an electron in a finite potential energy well. If the electron makes a transition from the n = 3 state to the ground state, what is the wavelength of the emitted photon?
(A) 2.3 nm
(B) 3.0 nm
(C) 5.3 nm
(D) 5.7 nm
(E) 6.0 nm