离子极化理论教学优化与实践

Teaching Optimization and Practice of Ion Polarization Theory

离子极化理论对于理解无机化合物的结构与性质变化具有广泛适用性,是离子键理论的重要补充。本文在讨论衡量离子极化程度的离子极化力、离子极化率、离子极化能和极化度等定性到定量标度基础上,针对现行多数无机化学教材极化理论集中讲授而知识点应用分散,导致理论学习抽象难理解,离子构型复杂难掌握和规律性变化应用难的实际,提出在离子极化理论教学过程中通过正确理解极化与变形辩证统一,深刻领会离子极化普遍性与特殊性,利用案例化教学解决理论集中学习而知识点应用分散教学实践矛盾,实现了离子极化理论优化教学及学生系统理解、综合分析和比较判断能力的提升。

The ionic polarization theory has a wide application in understanding the structural changes and properties of inorganic compounds,and it is an essential supplement to ionic bonds theory.Using a foundation of qualitative and quantitative scales for discussion,including ion polarization force,ion polarizability,ion polarization energy,and polarization degree to characterize the ion polarization degree,this paper focused on the concerns that polarization theory is intensively taught while its application is segmented and unstructured in most inorganic chemistry textbooks.This leads to an abstract and difficult-to-understand theory;the ion configuration is complex and challenging to comprehend,and the regularity is not strong and is difficult to apply.It is proposed that good teaching practices for ion polarization theory comprise the correct understanding of the dialectical unity of polarization and deformation,in-depth comprehension of the universality and particularity of ion polarization and that the case teaching resolves the contradiction between the centralized explanation of the theory and the unstructured application of knowledge points.The teaching of ion polarization theory is optimized,thereby improving the students’system of understanding,comprehensive analysis,and comparative judgment capabilities.