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Question
The figure shows the energy levels for an electron in a finite potential energy well. If an electron in the n= 2 state absorbs a photon of wavelength 2.0 nm, what happens to the electron?
A) It makes a transition to the n= 3 state.
B) It makes a transition to then= 4 state.
C) It escapes the well with a kinetic energy of 280eV.
D) It escapes the well with a kinetic energy of 730eV.
E) Nothing; this photon does not have an energy corresponding to an allowed transition so it is not absorbed.
Answer
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