Finding Energy Level for H-Atom

H-Atom ()

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Phoebe Chen 4I
Posts: 55
Joined: Fri Sep 28, 2018 12:29 am

Finding Energy Level for H-Atom

Postby Phoebe Chen 4I » Thu Oct 11, 2018 12:36 am

Hi, I am not sure how to solve this problem. I tried using the wavelength value to find the energy of the photon emitted, but I am not sure where to go from there. Attached is question 1.15 from 6th edition.
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Tony Ong 3K
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: Finding Energy Level for H-Atom

Postby Tony Ong 3K » Thu Oct 11, 2018 1:03 am

For a line at 102.6nm, you convert into meters and then do following:
V=c/λ
=(3.00*10^8ms^-1)/102.6*10^9m= 2.922 * 10^15 s^-1

Then use Rydberg to find values for N :
V=R[(1/n1^2)-(1/n2^2)].

We know that hydrogen has n1= 1, so
1/n2^2= 1/1^2 - V/R
1/n2^2= 1 - ( 2.922 * 10^15 s^-1)/(3.29 * 10^15 s ^-1) = 0.112
n2^2= 9
n2= 3
Answer is 3

Phoebe Chen 4I
Posts: 55
Joined: Fri Sep 28, 2018 12:29 am

Re: Finding Energy Level for H-Atom

Postby Phoebe Chen 4I » Thu Oct 11, 2018 1:12 am

Does n1 mean energy level one, or only in the case for H-Atoms. I thought n1 was just notation for initial energy level.


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