I-J I Imide Imide Group Imine Imine Group Imminium Ion Index of Hydrogen Deficiency Initiation Inner Salt Insertion Intermolecular Reaction Internal Alkyne Internuclear Axis Intimate Ion Pair Intramolecular Reaction Inversion Of Configuration Iodic (VII) Acid Iodoform Test Iodohydrin Ipso Carbon Irregular Terpene Isoalkane Isomerism Isomers Isoprene Isoprene Residue Isoprene Rule Isoprene Unit J