32 atoms and 33 bonds - basic inorganic and organic chemistry set Hard plastic storage case Standard size, interchangeable with other branded sets Includes: (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