n, l, ml, ms
n= principal; the energy level/distance from nucleus; range is 1-infinity
l= azimuthal; the type of orbital it is (l=0=s, l=1=p, l=2=d, l=3=f); range is 0, 1, 2, or 3
ml= magnetic; shares which p, d, or f orbital you have (oriental space); range is \[-l -→ +l\]
ms= spin; shares the electrons spin; range is either +1/2 or -1/2