问题:
[单选题]
下列哪个是由单电子原子p1组态的能级最高光谱支项到s1组态的最低光谱支项的跃迁
2P1/2→2S1/2
A2P1/2→2S1/2
B2P3/2→2S1/2
C2S1/2→2P1/2
D2S1/2→2P3/2
下列哪个是由单电子原子p1组态的能级最高光谱支项到s1组态的最低光谱支项的跃迁
2P1/2→2S1/2
A2P1/2→2S1/2
B2P3/2→2S1/2
C2S1/2→2P1/2
D2S1/2→2P3/2
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