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Thread: Dot point help

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    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

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    Re: Dot point help

    Post the questions?
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    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

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    Re: Dot point help

    Quote Originally Posted by mrpotatoed View Post
    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,



    will yield the highest energy output.

    https://en.wikipedia.org/wiki/Hydrogen_spectral_series as a reference if need be.
    Fizzy_Cyst and InteGrand like this.

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    Re: Dot point help

    Quote Originally Posted by mrpotatoed View Post
    "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?
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    Re: Dot point help

    Which module is this ?...

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    Re: Dot point help

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

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    Re: Dot point help

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

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    Re: Dot point help

    Quote Originally Posted by th4st00g3 View Post
    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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