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Homework Help: Magnetic moment of singly ionized helium

  1. Mar 28, 2014 #1
    1. The problem statement, all variables and given/known data

    Find the magnetic moment of singly ionized helium in terms of Bohr Magneton

    I know the expression for the Bohr Magneton -- I am not trying to get a walk-through here as I want to do this myself, but I just want to know if I am correct in assuming that to get the problem going I use the Bohr radius expression, but with Z=2 and e = 1 (since we have one electron and two protons).

    Plugging in the Bohr radius to the expression for angular momentum ([itex]L= 2\pi \nu r^2[/itex] after that.

    Mostly I wasn't sure if I should assume its the magnetic moment of the nucleus or the electron around it...
  2. jcsd
  3. Mar 28, 2014 #2

    Simon Bridge

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  4. Mar 29, 2014 #3
    that's just it -- it isn't entirely clear from the question whether we're supposed to work from the spins or fro mthe shell model, or derive the whole thing. I was going to derive it and try to go from there.
  5. Mar 29, 2014 #4

    Simon Bridge

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    Well what does the coursework do?
  6. Mar 30, 2014 #5
    well, so far he hasn't gone into the equations using Lande g-factor yet, or any of that. So I suspect that I should do the following:

    -calculate the radius of single electron orbit around He nucleus using Bohr model
    - plug that into the expressions for magnetic moment, working basically classically
    - see how that compares to bohr magneton

    Does that sound reasonable?
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