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Line Spectra Question

  1. Jul 23, 2008 #1
    I was given 400 nm. I was tasked to find n but i kept getting a value which is a not a integer. The value of n must be an integer right?

    1/W = R(1/4 - 1/n^2)



    where R=1.097e7


    I am thinking to make n as 6. But are there values of n greater than 5?
  2. jcsd
  3. Jul 24, 2008 #2


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    n can take any integer number(greater than zero), and since you got n=6.752, I would give the answer n=7.

    n = 7 gives you W = 397nm ....
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