递进讨论式教学设计与实践——价层电子对互斥(VSEPR)理论学习  

Progressive Discussion-Based Teaching Design and Practice:Learning Valence Shell Electron Pair Repulsion(VSEPR)Theory

作　　者：李春霞[1] 钮因尧[1] 何伟娜[1] 严忠红[1] LI Chun-Xia;NIU Yin-Yao;HE Wei-Na;YAN Zhong-Hong(Center for Medicinal Chemistry and Bioinformatics,Shanghai Jiao Tong University School of Medicine,Shanghai 200025,China)

机构地区：[1]上海交通大学医学院药物化学与生物信息学中心,上海200025

出　　处：《化学教育(中英文)》2025年第6期75-82,共8页Chinese Journal of Chemical Education

基　　金：2022年上海高校市级重点课程项目;上海交通大学教学发展基金(CTLD22J0024);上海交通大学创新创业专项基金(CTLD23C0010);上海交通大学基础医学院教育教学项目(AJ1-0206-00-0013);上海市高等教育学会规划研究课题(1QZD2414)。

摘　　要：应用价层电子对互斥(VSEPR)理论能够简便地预测AB_n型分子或离子的空间构型,VSEPR理论能将基态原子核外电子排布和杂化轨道理论相联系,又是分子间作用力和配位化合物学习的基础,灵活掌握VSEPR理论能够增强结构化学部分知识点学习的逻辑性,改善对抽象内容的学习好感度。以不完全符合VSEPR预测结果的NO_(2)分子为载体,围绕其价键结构和键角设计并实践了一系列递进式讨论,最后以“共振论”和“三电子键”作为扩展,在巩固教学内容的同时激发学生探求真相的学习热情,引导学生客观、全面地认识VSEPR理论,培养以发展的眼光看待科学理论和规则的辩证思维习惯,提升思政素养。The application of the valence shell electron pair repulsion(VSEPR)theory allows for a straightforward prediction of the spatial configuration of AB_n type molecules or ions.The VSEPR theory links the electron distribution of ground state atoms and the hybrid orbital theory.It is also the foundation for studying intermolecular forces and coordination compounds.Proficiency in VSEPR theory enhances the logic of learning structural chemistry and improves the affinity for learning abstract content.This article employs the NO_(2) molecule, which does not fully conform to the VSEPR prediction, to design and implement a series of progressive discussions around its valence bond structure and bond angles.It concludes with an exploration of“resonance theory”and“three-electron bond”to extend learning, consolidating the teaching content while igniting the enthusiasm for seeking the truth.This approach guides students to understand the VSEPR theory objectively and comprehensively, cultivates a dialectical thinking habit of approaching scientific principles with an evolutionary perspective, and improves ideological and political literacy.

关 键 词：价层电子对互斥理论 杂化轨道理论 空间构型 共振论 NO2 

分 类 号：G642[文化科学—高等教育学] O6-4[文化科学—教育学]