Answers by visitors named: Geetika

Allowable combinations are n=3, l=2,ml=1, ms=+1/2 n=5, l=3, ml=-1, ms=-1/2 n=4, l=2, ml=3, ms=+1/2 Combinations not allowed n=2, l=1,ml=-1,ms=-1 because ms has to -1/2 or +1/2 n=5, l=5, ml=1, ms=+1/2 because n and l cannot be equal n=3, l=-2, ml=1, ms=+1/2 because l cannot be negative.