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quantum numbers

SpikeyMike83

Senior Member
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May 19, 2005
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GA
    so the magnetic quantum number ranges from
    -l --> +l

    But do we need to know, for example, specifically what the ml for Sulfur is? Or just knowt that because Sulfur is "p", it can be -1,0,1?

    If there is a way to tell which one of those it is most often, how do you do it? i'm going crazy over this!
     

    GRAD

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    Jul 10, 2006
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    1. Pre-Dental
      yeah just need to know it for different groups eg s, p, d, f

      if they ask you for how many electrons in l=3
      its 4l+2

      if they ask you how many electrons in n=2
      its 2n^2= 8

      Just remember those, and also know that sis when l=0
      p is when ml is -1--->1 thats three subshells 3*2=6 electrons
      f is when l is from -3--->3 thats 14 electrons, etc

      if they ask for sulfur, which i dont think they will cause then you have the number of electrons right in front of you.

      quantum numbers are used to describe any electron, but i dont think you can determine it the opposite way. if you look at sulfur, you see that it has - electrons, so you would know the spin, and you would know if its paramagnetic, etc. I doubt they would ask you to find ml for sulfur
       

      SpikeyMike83

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        thanks!

        I just was using sulfur as an example because me and my mom were trying to figure it out. I'm fine with knowing all of what you said, I just know that the magnetic quantum number determines where the electron is most likely to be found and so I didn't know if they'd ask you to pinpoint a specific value... or just know that if you're dealing with p, it could be -l --> l

        I'm guessing they'd probably give you some quantum numbers and ask which could be correct for a certain element.
         
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