Question

In the quantum mechanical treatment of the hydrogen atom, which one of the following combinations of quantum numbers is not allowed?

a.) n=1; l=3; ml=0
b.) n=3; l=1; ml=-1
c.) n=3; l=2; ml=-1
d.) n=3; l=3; ml=2
e.) n=3; l=2; ml=2

Answer 1

a.) n=1; l=3; ml=0 is incorrect because l must be from 0 to n-1, which in this case, isn't.

Answer 2

Thanks :) @anitaasks