论文部分内容阅读
一、混淆几种化学用语或不熟悉原子结构的基础知识例1下列各项中表达正确的是().A.白磷的分子式:PB.Mg~(2+)的结构示意图:C.乙醇的结构简式:C_2H_6OD.HCl0的电子式:HClO易错分析:本题易受化学式书写形式的影响,误认为D项正确,错选D.解析:白磷的分子式为P_4;Mg~(2+)的结构示意图正确;乙醇的结构简式为CH_3-CH_2-OH(或
First, the confusion of several chemical terms or basic knowledge of the atomic structure are not familiar with Example 1 The following is expressed correctly () A. white phosphorus formula: PB.Mg ~ (2+) structure diagram: C. ethanol Simple structure: C_2H_6OD.HCl0 electronic: HClO error-prone analysis: The subject is susceptible to the impact of chemical forms of writing, mistaken for the correct D, wrong D. Analysis: white phosphorus formula P_4; Mg ~ (2+) Structure diagram is correct; Ethanol structure abbreviated CH_3-CH_2-OH (or