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Homework Help: Value of n for the energy level transition that produce lamb

  1. Jun 30, 2015 #1
    1. The problem statement, all variables and given/known data

    A wavelenght of 410.2*10^-9m is emitted by the hydrogen atom in a high voltage discharge tube. what are the initial and final values of the quantum number n for the energy lvl transition that produces this wavelength?

    2. Relevant equations
    1/(lambda) = R * (1/2^2 - 1/n^2): Lyman series?

    3. The attempt at a solution
    I have used this equation to figure out (lambda) but never the other way around.
    I tried to solve for n but it dosnt make sense. How can I know which series to solve n for?
    At first I thought that it had to be Lyman as Z=1 for hydrogen and subsequently n=1 but no.
    The answer is ni = 6 and nf = 2.
  2. jcsd
  3. Jun 30, 2015 #2
    use Rydberg eq.

    RH=10973732 m^(-1)
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