8 5-1-2 Localized Molecular Orbital Valence Bond Theory 20218/21 Chemistry Departme nt of Fudan UniversityPhysical ChemistryI Chapter V Polyatomic Molecular Structure 2021/8/21 Chemistry Department of Fudan University 9 §5-1-2. Localized Molecular Orbital Valence Bond Theory 1 2 3 x x z y