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Homework Help: Bohr Model

  1. Dec 11, 2011 #1
    1. Assuming that the wavelengths of visible light lie between about 300nm and 700nm, what transitions in Li++ (hydrogenic lithium ions, Z=3) would be visible. Identify each transition by initial and final principal quantum number n. Also identify those transitions that are also seen in hydrogen (3->2, 4->2, 5->2 in hydrogen)

    2. E=13.6eV*(Z^2)*((1/n)^2-(1/m)^2)
    λ=1240/E


    3. I ran through it but I keep getting the same wavelengths as hydrogen. I don't know what I'm doing wrong. Do I multiply n*Z on the bottom before I square it?
     
  2. jcsd
  3. Dec 12, 2011 #2
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