为什么CH_4是正四面体结构?为什么烷烃分子中的碳链是折线形的?苯环中介于单键和双键之间的键究竟是怎么回事?有机物中怎么找相邻原子间的正负性?等等,这些都是学生在中学化学学习过程中提出的各种各样的疑问。如何更好地解释清楚这些疑问呢?这就需要从结构化学的角度来进行分析。人教版选修5《有机化学基础》教材中并未对以上 Why CH_4 is a tetrahedral structure? Why alkane molecules in the carbon chain is a linear? In the benzene ring between the single bond and the double bond between what is the matter? How to find the organic matter between adjacent positive and negative atoms And so on, these are all sorts of questions that students put forward in chemistry learning in middle school. How to better explain these questions? This requires structural chemistry from the perspective of analysis. PEP 5 Elective 5 “Basics of Organic Chemistry” is not the above textbook