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Z119687

Cochranes molecular models

organic/inorganic, minit, classroom set with 5 texts

Synonym(s):

chemistry model sets, molecular model sets

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About This Item

UNSPSC Code:
60104506
NACRES:
NB.17

description

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

feature

no. of atoms 1,390
no. of bonds 1,700

manufacturer/tradename

Cochranes 0076

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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 sigma-aldrich.com
Learn about molecular shape, stereochemistry, isomerism and bonding in organic and inorganic molecules and complex ions. This advanced set is most suitable for group work in schools, universities and research laboratories. Includes instruction/activity booklet. Supplied in a sturdy compartmented box. Includes 5 instruction/activity booklets.

Scale: 2 cm = 0.1 nanometer (1 A), Minit

ATOMS:
  • 1-prong: Hydrogen, white (250), Nitrogen, blue (50), Oxygen, red (50), Fluorine, light green (50), Sulfur, yellow (20), Chlorine, green (90)
  • 2-prong linear: Carbon, black (50), Nitrogen, blue (20)
  • 2-prong 100°: Sulfur, yellow (50)
  • 2-prong 110°: Oxygen, red (125)
  • 3-prong 120°: Carbon, black (100), Nitrogen, blue (30)
  • 4-prong tetrahedral: Carbon, black (200), Nitrogen, blue (50), Oxygen, red (50), Phosphorous, purple (25), Sulfur, yellow (25), Metal, silver (20)
  • 6-prong octahedral: Carbon, black (20), Sulfur, yellow (10), Metal, silver (20)
  • 5-prong trigonal bipyramid: Carbon, black (50), Nitrogen, blue (10), Oxygen, red (15), Phosphorous, purple (10)
  • W pegs (50)

BONDS:
  • Straw, green, 2.5 cm (960)
  • Straw, green, 2 cm (240)
  • Straw, green, 1.5 cm (320)
  • Straw, red, 3 cm (96)
  • Straw, red, 2 cm (96)
  • Straw, mixed set/26 (5)
  • St v flexible white, 5 cm (20)
  • St v flexible white, 2.5 cm (30)

Certificates of Analysis (COA)

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Articles

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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