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Correctly understand the property of unsaturated bonds by using the data of bonding energy
Pages: 74-77
Year: Issue:  8
Journal: Education in Chemistry

Abstract:  1 问题的产生在人教版<普通高中课程标准实验教科书化学选修3物质结构与性质>(以下简称人教版<物质结构与性质>)一书第28至29页σ键和π键知识的学习中,学生知道σ键是两个原子轨道(如两个s轨道,或两个px轨道,或一个s轨道与一个px轨道)以"头碰头"方式从正面进行重叠所形成的共价键,π键是两个互相平行的原子轨道(如两个py轨道或两个pz轨道)以"肩并肩"方式从侧面进行重叠所形成的共价键,由于...
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