NEW Molecular Model Set! This advanced model set has 150 components including 5 VSEPR models (linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral) and 1 square planar model for constructing complex ions. The instructions and pictures show you how to assemble the atom models. With the Advanced Molecular Model Set for Organic Chemistry, you can build thousands of different organic structures. This set is the perfect size to carry in your backpack or purse. The snap-closure prevents spills and the compartments keep the atom models and bonds conveniently separated. When learning to visualize 3-D molecular structures, isomerism and nomenclature, this model set is essential. Advanced Molecular Model Set for General and Organic Chemistry 5 VSEPR models 1 square planar model 14 black carbon atoms 30 white hydrogen atoms 8 red oxygen atoms 4 blue nitrogen atoms 2 yellow sulfur atoms 2 green phosphorus atoms 6 yellow fluorine atoms 6 green chlorine atoms 6 orange bromine atoms 6 purple iodine atoms 12 gray links for multiple bonds, 38mm 48 gray links for single bonds, 25mm Plastic case (27 x 18 x 4 cm) Instructions Included.