Unformatted text preview: molecular geometry from the electron pair geometry • In the above example (ammonia), we would predict that the three hydrogens would form the vertices of a tetrahedron, and the nonbonding electron pair the fourth. Thus, ammonia would have a trigonal pyramide arrangement of its H atoms Steps involved in determining the VSEPR model: 1. Draw the Lewis structure 2. Count total number of electron pairs around the central atom. Arrange them to minimize the electron shell repulsion 3. Describe the molecular geometry in terms of the angular arrangement of the bonding pairs...
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 Fall '10
 LauraChoudry
 Chemistry, Electron, Valence, Mole, Lewis Structure, VSEPR, bonding pairs, electron pair geometry, valence electron pairs, electron shell repulsion

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