A.1s22s22p63s23p63d104s24p64d105s25p4
B.1s22s22p63s23p63d104s24p5
C.1s22s22p63s23d104s24p64d105s25p66s1
D.1s22s22p63s23p63d104s24p64d105s2
A.CO2
B.汽車(chē)排放的廢氣
C.燃煤及冶煉廠排放的SO2
D.石油化工廠排放的廢氣
A.+1,-1
B.+1,+5
C.-3,+5
D.-3,+3