SEARCH Articles Figures Tables General Features of Early Potential Energy Barriers for Exothermic Reactions General Features of Late Potential Energy Surfaces for Exothermic Reactions General Features of Potential Energy Surfaces General Requirements upon the Methods for Calculating Potential Energy Surfaces General features of late potential energy surfaces for exothermic reactions where the attacking atom is heavy General features of late potential energy surfaces where the attacking atom is light Potential Energy Surfaces Dictate General or Specific Catalysis Potential energy surface generalized transition state Potential energy surfaces, calculation generalized valence bond The general topology of potential energy surfaces