单项选择题
A.F- B.NH3 C.CN- D.CO
A.四面体 B.立方体 C.八面体 D.单斜体
A.1s22s22p6 B.1s22s22p33s1 C.1s22s22p63s23p63d54s1 D.1s22s22p63s23p63d34s2