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Visible transistions

  1. Oct 26, 2015 #1
    1. The problem statement, all variables and given/known data
    Photons can be observed by the human eye as long as their energies are between 1.8 eV and 3.1 eV. In a particular atom one of the electron energy levels is at -60.0 eV. Can electron transitions, associated with this energy level produce photons that are visible to the human eye? Explain why your answer is ’yes’ or ’no’.

    2. Relevant equations
    I'm not sure about these

    En=-(Z2E0)/n2

    Em=-(Z2E0)/m2

    n>m

    3. The attempt at a solution
    ΔEn→m=-Z2E0(1/n2-1/m2)

    Where E0=13.6eV

    I know the answer is 'no' and that we are meant to get to a point where n/m<1 to show that the answer is 'no', but I don't know where to go from here.
     
  2. jcsd
  3. Oct 26, 2015 #2

    andrevdh

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    Homework Helper

    The photons are produced when the electrons move over from a higher energy level to a lower energy level.
     
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