Molecular Model Student, with 154 pieces which include 74 atoms and 80 bonds.

GSC International 1864 Molecular Model 154-Piece Student Kit – Includes 74 Atoms & 80 Links for Chemistry & Biology Education, STEM Science Experiments, Molecular Structure Kit for Students, Classroom & Homeschool Learning The kit has been designed to assist chemical education through university levels. Tapered plastic bonding rods help to simplify the construction process. Included in this set are 154 pieces that include 74 atoms, and 80 various size bonds. Instructions can be found with a QR code on our website. The kit has been designed to assist chemical education through university levels. Tapered plastic bonding rods help to simplify the construction process. Included in this set are 154 pieces that include 74 atoms, and 80 various size bonds. Instructions can be found as a QR code on our website. Includes: 6 blue Trivalent/Pentavalent, 5 green Monovalent Halogen, 4 orange Monovalent Sodium/Potassium, 6 orange Bivalent Calcium/Magnesium, 4 yellow Sulfur/Selenium, 6 bl