EISCO Student Inorganic and Organic Chemistry Molecular Model Set 65 Pieces (32) Atoms (33) Bonds This student inorganic and organic molecular model set is the perfect starter set. It contains the following parts: [6] Carbon (black) 4 Holes [10] Hydrogen (white) 1 Holes [4] Oxygen (red) 2 Holes [2] Nitrogen (blue) 4 Holes [2] Halogen (green) 1 Holes [2] Halogen (green) 4 Holes [1] Sulphur (yellow) 2 Holes [1] Sulphur (yellow) 4 Holes [1] Phosphorus (purple) 4 Holes [2] Metal (grey) 1 Holes [1] Metal (grey) 2 Holes [25] Medium Bonds [8] Long (Flex) Bonds