Description 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 sigma-aldrich.com Scale: 2 cm = 0.1 nanometer (1 A), Minit ATOMS: • 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) BONDS: • 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)