VSEPR theory
The valence shell, electron pair repulsion theory predicts the shape of molecules based on the electrostatic repulsion between pairs of valence electrons for other valence electrons in covalent bonds or in unbonded pairs.
Movies:
Trigonal bipyramid (large, 2.4 MB)
Trigonal bipyramid (small 462 kB) Tetrahedron (large 1.7 MB)
The above movies require Quicktime.
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Updated 5/29/2001 by clh.