§5.1 Hybrid Orbital Theory and Atomic Orbital Hybridization §5.2 Valence Shell Electron-Pair Repulsion (VSEPR) Model (After-class reading) §5.3 Delocalized -electrons/conjugation and Delocalized Molecular Orbital Theory §5.4 Hückel molecular orbital(HMO)theory and -conjugation §5.5 Graphical method to predefine the coefficients of HMOs for conjugated systems §5.6 Symmetry of molecular orbital and symmetry rules for molecular reactions