1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Terms Allowed in Spectroscopic Structure of Calcium

  1. Oct 15, 2016 #1
    1. The problem statement, all variables and given/known data
    Why can't we have 4s^2 3S1 calcium? I've looked up a table of terms and this is never given, so I guess we can't have it. Why can't the spins of each of the outer electrons add to give S = 1, J = 1, and a degeneracy of 3? I guess the answer must be pretty basic since nobody has asked about this that I can find, so what's going on?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Oct 15, 2016 #2

    Charles Link

    User Avatar
    Homework Helper
    Gold Member

    I think this one is simple: Two electrons in the same orbital implies S=0 because the spins must be opposite.
  4. Oct 16, 2016 #3
    Oh yeah, completely forgot about the PEP! Thanks for taking your time to answer my dumb question!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted