Energy emitted from an Electron  [ENDORSED]

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Ishan Saha 1L
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Joined: Fri Sep 29, 2017 6:03 am

Energy emitted from an Electron

Postby Ishan Saha 1L » Fri Oct 20, 2017 9:23 am

Hi! I just wanted to clarify if when we are calculating for the energy emitted by an electron that is relaxing from n=5 to n=1, would the initial energy level be n=5 and the final level be n=1? Or would the initial be n=1 and the final be n=5?

Seth_Evasco1L
Posts: 54
Joined: Thu Jul 27, 2017 2:00 am

Re: Energy emitted from an Electron  [ENDORSED]

Postby Seth_Evasco1L » Fri Oct 20, 2017 9:27 am

Hi Ishan!

The initial energy level should be n=5 because as we've learned, the emission of energy by an electron occurs when that electron relaxes from its excited state down to a lower energy level. So when the electron goes from energy level 5 to energy level 1, energy is emitted and vice versa if it were to go up in energy level (energy is then absorbed).

Leah Thomas 2E
Posts: 51
Joined: Fri Sep 29, 2017 6:06 am

Re: Energy emitted from an Electron

Postby Leah Thomas 2E » Fri Oct 20, 2017 10:53 am

Also by having the initial energy be at n=5, you get a negative energy in your calculations which is what you want since the energy is being emitted (electron is losing that energy). Just look at the context of the question though.

Manasvi Paudel 1A
Posts: 50
Joined: Sat Jul 22, 2017 2:00 am

Re: Energy emitted from an Electron

Postby Manasvi Paudel 1A » Fri Oct 20, 2017 3:39 pm

When using the Rydberg equation in the form of r(1/N1^2 - 1/N2^2), N1 is always the lower energy level! Even if the electron is jumping from a high energy level to a lower one.

Rachel N 1I
Posts: 48
Joined: Thu Jul 27, 2017 2:00 am

Re: Energy emitted from an Electron

Postby Rachel N 1I » Sat Oct 21, 2017 12:12 am

You will get a negative energy because as it moves from n=5 to n=1, it loses energy. But remember that wavelength and frequency will always be positive!


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