(1)非极性;2;2
(2)原子;SiO 2+4HF=SiF 4↑+2H 2O
(3)P>S>Si
(4)1s 22s 22p 63s 23p 63d 6(或[Ar]3d 6);配位;sp 3;三角锥形
(5)1:2