A.n=1,l=0 B.n=2,l=0 C.n=4,l=0 D.n=3,l=2
A.1s22s22p63s23p63d94s2 B.1s22s22p63s23p63d104s1 C.1s22s22p63s23p64s23d9 D.1s22s22p63s23p64s13d10
A.3,0,0,+1/2 B.3,1,0,+1/2 C.3,1,0,-1/2 D.3,1,-1,-1/2