posted by Hero .
The following combinations of quantam numbers are not allowerd
1. n=3 l=0 m=-1
2. n=4 l=4 m=0
Can someone explain to me why the second one is not allowed.
Also check my explaination for the first one.
If L=0 then m also has to also =0
The s subshell (ℓ = 0) contains only one orbital, and therefore the mℓ of an electron in an s subshell will always be 0.