Isomerism 2 types of isomerism Constitutional (structural) isomers (link) 3 Types Functional isomers (link) Positional isomers (link) Skeletal isomers (link) Stereoisomers 3 Types Geometric isomers (link) Cahn-Ingold-Prelog priority Rules ( used to determine the priority of the atom in the compound) 3 types of configurations Cis/Trans configuration (link) R/S configuration E/Z configuration (link) Optical isomerism (link) Chirality (the symmetry of the molecule) Chiral 2 types of chiral molecules Enantiomer (link) Diastereomer (link) Achiral Boat conformation (link) type of achiral molecule Mesocompound (link) Conformational isomers (link) different types of illustration for alkanes Sawhorse projection (link) Newman projection (link) Dihedral Angle (the name of the degrees involved) for cyclohexane Chair conformation (link) different types of bonds involved Equatorial bond Axial bond