chemistry
posted by keisha .
write all the possible set of magnetic quantum number for an electron in the n=2 shell that have an angular momentum number l=o and a spin quantum number +1/2

If n = 2 then l can be 0 or 1
So for n = 2 and l = 0, there can be two electrons, one with +1/2 and the other with 1/2
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