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Homework Help: Infinite Square Well Electron Jumps from n=4 to ground state

  1. Oct 24, 2012 #1
    1. The problem statement, all variables and given/known data
    An electron is trapped in an infinite square-well potential of width 0.5 nm. If the electron is initially in the n=4 state, what are the various photon energies that can be emitted as the electron jumps to the ground state?

    2. Relevant equations

    3. The attempt at a solution
    Im not quite sure if this is a trick or not, but I thought that I did not need the energy equation for the 1-D infinite well, En, but just needed to use the ΔE equation and do n=4->n=1. Or do I also need to find the energy at n=4 and n=1 and show those as well?
  2. jcsd
  3. Oct 24, 2012 #2
    This (4->1) is one possible transition but not the only one. The electron does not have to go "straight" from 4 to 1.
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