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The Valence Shell Electron Pair Repulsion Model (VSEPR Model)

The guiding principle: Bonded atoms and unshared pairs of electrons about a central atom are as far from one another as possible.

Bonded atoms	Nonbonded Pairs	Total	Electronic Geometry	Molecular Shape	Bond Angle	Hybridization
———————————————————————————————
5	0	5	bipyramidal	bipyramidal	90&120°	sp3d
Example: PCl5
4	1	5	bipyramidal	'seesaw'	90&120°	sp3d
Example: SF4
3	2	5	bipyramidal	T-shape	90°	sp3d
Example: ClF3
2	3	5	bipyramidal	linear	180°	sp3d
Example: XeF2, I3-
——————————————————
6	0	6	octahedral	octahedral	90°	sp3d2
Example: SF6
5	1	6	octahedral	square pyramidal	90°	sp3d2
Example: BrF5
4	2	6	octahedral	sq. planar	90°	sp3d2
Examples: XeF4, ICl4-
3	3	6	octahedral	planar	90°	sp3d2
2	4	6	octahedral	linear	180°	sp3d2