Ms +10-1 ML M=±2，±1,0 ·2 1 D Ms=0 +1 1 2 1 (L=2,S=0) 0 1 3 1 (2S+1)(2L+1)=5 ·1 1 2 -2 1 Ms +10-1 M=±1,0 sP Ms=±1,0 1 1 1 (L=1,S=1) 12 1 (2S+1)(2L+1)=9 -1 11 1 Ms M=0 IS (L=0,S=0) M、=0 (2S+1)(2L+1)=1 ML =2, 1, 0 MS =0 （2S+1)(2L+1)=5 ML =1, 0 MS = 1, 0 （2S+1)(2L+1)=9 ML = 0 MS =0 （2S+1)(2L+1)=1