1. ## Dot point help

Can anyone show me how to do:

1.71 (no idea how to do this)

1.73(b): I subbed in n=3, n=6 to the equations for final and initial respectively (and then reciprocated) but got the wrong answer.

Both questions from quanta to quarks area

2. ## Re: Dot point help

Post the questions?

3. ## Re: Dot point help

"use the rhyberg equation to calculate the ionisation energy of hydrogen" \

Im guessing the final shell would be infinity, initial is one, and use just sub that in, but I get 10.something when it should be 13.6

The other question is a diagram that asks to calculate the wavelength of the photon of highest energy in the Paschen series which can be found here https://upload.wikimedia.org/wikiped...itions.svg.png

highest energy photon would be when an electron drops from shell 6 to 3, right? So I tried subbing those values (and tried other possible electron paths also) into the rhyberg equation but got it wrong so not sure what to do

4. ## Re: Dot point help

Originally Posted by mrpotatoed
The other question is a diagram that asks to calculate the wavelength of the photon of highest energy in the Paschen series which can be found here https://upload.wikimedia.org/wikiped...itions.svg.png

highest energy photon would be when an electron drops from shell 6 to 3, right? So I tried subbing those values (and tried other possible electron paths also) into the rhyberg equation but got it wrong so not sure what to do
Put shell infinity to 3. Does this give you the answer? It would make sense because it is asking you for the highest energy emission, would be that of smallest wavelength.

Putting,

$\frac{1}{n^2} = 0 \ , \ \ So n \rightarrow \infty \ ,$

will yield the highest energy output.

https://en.wikipedia.org/wiki/Hydrogen_spectral_series as a reference if need be.

5. ## Re: Dot point help

Originally Posted by mrpotatoed
"use the rhyberg equation to calculate the ionisation energy of hydrogen" \

Im guessing the final shell would be infinity, initial is one, and use just sub that in, but I get 10.something when it should be 13.6
13.6eV is the correct value for the ionisation energy of Hydrogen, so must be plugging something incorrectly into your calculator?

6. ## Re: Dot point help

Which module is this ?...

7. ## Re: Dot point help

Originally Posted by Drsoccerball
Which module is this ?...
From Quanta to Quarks (Option)

8. ## Re: Dot point help

Why did you use shell 3? Is that the shell that a hydrogen electron sits in?

9. ## Re: Dot point help

Originally Posted by th4st00g3
Why did you use shell 3? Is that the shell that a hydrogen electron sits in?
The Paschen series is when an electron drops from n = ? to n = 3, thereby releasing infrared radiation.

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