(1)1s 22s 22p 63s 23p 63d 104s 24p 3;As
(2)
或
;氧
(3)三角锥
(4)As 2O 3+6Zn+6H 2SO 4==2AsH 3↑+6ZnSO 4+3H 2O
(5)NH 3>PH 3>AsH 3