Pre-assessment atomic spectra number 35  [ENDORSED]

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Ekin 1C
Posts: 21
Joined: Fri Sep 29, 2017 7:04 am

Pre-assessment atomic spectra number 35

Postby Ekin 1C » Fri Oct 13, 2017 9:47 pm

can anyone explain "35. Calculate the frequency of a photon emitted by a hydrogen atom when an electron makes a transition from the fourth to the second principal quantum level." I thought I was plugging in the numbers correctly but I keep getting -4.09x10^-19

Rain Taganas 1J
Posts: 22
Joined: Fri Sep 29, 2017 7:05 am

Re: Pre-assessment atomic spectra number 35  [ENDORSED]

Postby Rain Taganas 1J » Fri Oct 13, 2017 11:30 pm

Use Rydberg's formula where the smaller number is n1 and the larger number is n2. In this case, n1 = 2 and n2 = 4.

Gurkriti Ahluwalia 1K
Posts: 37
Joined: Fri Sep 29, 2017 7:07 am

Re: Pre-assessment atomic spectra number 35

Postby Gurkriti Ahluwalia 1K » Sat Oct 14, 2017 9:08 pm

You can use Rydeberg's equation (1 step) or E=hv and then subtract the differences of the two (multistep). I believe this example is worked in the video module towards the end.


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