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Wavelength limits of the Lyman and Paschen series of Hydrogen 
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#1
Oct1109, 05:28 PM

P: 24

1. The problem statement, all variables and given/known data
Use the Bohr theory to find the series wavelength limits of the Lyman and Paschen series of hydrogen. 2. Relevant equations [tex]\lambda[/tex]=[tex]\lambda[/tex]_{limit}(n^{2})/(n^{2}n_{0}^{2}) Lyman: n_{0}=1 Paschen: n_{0}=3 3. The attempt at a solution The solutions are 91.13 nm (Lyman) and 820.1 nm (Paschen) but I do not know the process of finding them. Thanks for any help. 


#2
Oct1209, 06:36 AM

HW Helper
P: 5,004

There's another equation relating the wavelength of an emitted photon to the quantum numbers [itex]n[/itex] and [itex]n_0[/itex]...use that equation and take the limit as [itex]n\to\infty[/itex] (why does this provide the limiting value of [itex]\lambda[/itex]? )



#3
Oct1309, 12:33 PM

P: 24

Followed your hint; got the answer. Much appreciation.
Thanks again, Jim 


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