2022英语周报高中高三hz30期答案

35.【答案】(1)NO(1分)(2)HF(1分)(3)abd(2分)(4)He(1分)xe(1分)(5)①空轨道(2分)②四边形(2分于须分)顺铂是极性分子反铂是非极性子水是极溶剂(2分)(6)x(2分)【解析】(1)Ot有15个电3O分子有15个电子。(2)原子半径:r(F) E(H-Br)>E(H-D(3)O2 P1F6 AxePt都存在离子键极性键、极性键又是o键,前者存在非极性键,后者不存在非极性键。(4)同族从上至下,元素第一电离能逐渐减小,氮的第一电离能最大;稀有气体形成的晶体都是分子晶体,从上至下,相对分子质量增大分子间范德华力增大,沸点升高。(5)①P(NH)2Cl2中Pt采用dsp杂化,6p有1个空轨道与DNA的碱基对形成配位键;②若Pt(NH3)2Ch2呈四面体结构,则它的空间构型只有1种,反之证明它是四边形结构;③顺铂是极性分子,反铂是非极性分子,根据相似相溶,顺铂在水中溶解度大于反铂。(6)1个品胞含4个铂原子,设铂原子半径为r,晶胞参数为a。面心立方晶胞中面对角线上三个原子相切,有:4r=2a,a=2,。。方”×43(2√2r)

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