ORGANIC CHEMISTRY Chapter I 1.15 A Summary of Important Concepts That Come From Quantum Mechanics 1.16 Molecular Geometry: The Valence Shell Electron-pair Repulsion(VSEPR)Model Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 1 1.15 A Summary of Important Concepts That Come From Quantum Mechanics 1.16 Molecular Geometry: The Valence Shell Electron-pair Repulsion (VSEPR) Model