摘要：H2SO4强酸.难缩合:H2S2O7 H3PO4中强酸.可缩合:Hn+2PnO3n+1 H4SiO4弱酸.易缩合: (4)为什么N只生成NF3.但可以生成PBr5.AsF5.SbCl5? 有强氧化性.Bi (2)鉴定: (I)NH4++OH-＝NH3+H2O (II)用Nessler试剂 2HgI42-+NH3+3OH-=↓(褐)+7I-+2H2O

网址：http://m.1010jiajiao.com/timu_id_3678023[举报]