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Cochranes molecular models

organic/inorganic, minit, single kit with booklet

chemistry model sets, molecular model sets


Scale: 2 cm = 0.1 nanometer (1 Å), Minit 3 cm = 0.1 nanometer (1 Å), Orbit


no. of atoms 240
no. of bonds 220


Cochranes 0073

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General description

An extensive model system offering 15 atomic bonding configurations in 12 colors of plastic atoms. The carbon atom is represented in nine configurations: linear, trigonal (in five angle variations), tetrahedral, octahedral, trigonal-bipyramidal. Models come in two sizes: Orbit and Minit. Spare atom centers and bonding tubes are available for all model kits.

Please see Technical Information Bulletin AL-183 for a listing of these items, available on our website at
Scale: 2 cm = 0.1 nanometer (1 A), Minit

  • 1-prong: Hydrogen, white (50), Nitrogen, blue (10), Oxygen, red (10), Fluorine, light green (10), Sulfur, yellow (2), Chlorine, green (15)
  • 2-prong linear: Carbon, black (10), Nitrogen, blue (2)
  • 2-prong 100°: Sulfur, yellow (10)
  • 2-prong 110°: Oxygen, red (25)
  • 3-prong 120°: Carbon, black (20), Nitrogen, blue (6)
  • 4-prong tetrahedral: Carbon, black (30), Nitrogen, blue (10), Oxygen, red (10), Phosphorous, purple (5), Sulfur, yellow (5), Metal, silver (2)
  • 6-prong octahedral: Carbon, black (2), Sulfur, yellow (1), Metal, silver (2)
  • 5-prong trigonal bipyramid: Carbon, black (6), Nitrogen, blue (1), Oxygen, red (1), Phosphorous, purple (1)
  • W pegs (8)

  • Straw, green, 2.5 cm (80)
  • Straw, green, 2 cm (20)
  • Straw, green, 1.5 cm (80)
  • Straw, red, 3 cm (12)
  • Straw, red, 2 cm (12)
  • Straw, mixed set/26 (1)
  • St v flexible white, 5 cm (4)
  • St v flexible white, 2.5 cm (6)

Certificate of Analysis

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Certificate of Origin

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VSEPR Chart | Valence Shell Electron Pair Repulsion Theory

Use our handy VSEPR chart to find the 3-D geometric VSEPR shapes of molecules and ions. Learn about VSEPR theory and shapes like trigonal planar or square pyramidal. VSEPR stands for valence shell electron pair repulsion.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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