Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Quantum Numbers for a couple of electrons Help needed!

  1. Apr 25, 2005 #1
    Good evening scholars! i just had a couple of questions about QNs.

    ok so the problem says:

    Give the sets of {n, l, m, s} for the electrons in:
    a) [tex]4p^2[/tex]
    b) [tex]6s^2[/tex]

    i just want to see if i'm on the right track. here's what i put for the first one (a):

    n= 4
    l= 1
    m= -1, 0
    s= +/- 1/2

  2. jcsd
  3. Apr 25, 2005 #2
    Keep in mind that m is from -L TO +L
    m would be -1, 0 , and +1
    your spin is fine

    what about the [itex] 6s^2 [/itex]
    so obvious n =6,
    p = ?? for the s shell waht is the P value?
    and thus what is the m value and s values correspondingly?
  4. Apr 25, 2005 #3
    true, but i thought since it said that only the first two orbitals of the "p" subshell contain electrons, i thought that since the lowest level energy shells get filled up first, only the -1, and 0 would be the only possible orbitals where electrons are located. is that wrong of me? :frown:

    as for the [tex]6^2[/tex], ok lets see:
    n=6 like you said, l=0 and m=0 (because there's only one orbital in the "s" subshell so that means that it is in the 0 orbital - or middle i suppose?). s= plus or minus 1/2 and l-
  5. Apr 25, 2005 #4

    my mistake, for the 4p2 you are correct the p orbital would be filled up for the -1 and 0 part
    however, since you fill in teh positive spins in first both the electrons have positive spin
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook