A.1s22s13s1 B.1s22s22p23s1 C.1s22s22p62d13s1 D.1s22s22p2 E.1s22s13s2
A.2,1,1,-1/2 B.2,1,0,-1/2 C.3,1,1,-1/2 D.3,2,-2,-1/2