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Infared WAvelengths in transition through energy levels

  1. Apr 20, 2010 #1
    1. The problem statement, all variables and given/known data
    How many transitions involving the hydrogen energy levels shown correspond to photons of infrared light? The infrared range is less than 1.8 eV

    2. Relevant equations
    Paschen Lines = Infared wavelengths

    3. The attempt at a solution
    I thought that since Paschen lines = Infared wavelengths, that 6 to 3, 5 to 3, and 4 to 3 would be the three transitions that corresponded to infared light. Not sure what I'm doing wrong here. Diagram is attached. Thanks!

    Attached Files:

  2. jcsd
  3. Apr 20, 2010 #2


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    What about 6 to 5, 6 to 4, and 5 to 4?
  4. Apr 20, 2010 #3
    Ah, I see. I thought that the infared rays were only the ones that landed on level 3, but they can land on level 3, 4, OR 5? However, visible rays ONLY land on level 2 and UV rays ONLY land on level 1, is that correct? Thanks for your help!
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