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AP VSEPR and Polarity Reference Sheet.
The molecular geometry, or three-dimensional shape of a molecule or polyatomic ion, can be determined using valence-shell electron-pair repulsion (abbreviated VSEPR and pronounced “VES-per”) theory, in which the basic principle is valence electrons around a central atom stay as far apart as possible to. minimize the repulsions.
VSEPR Valence Shell Electron Pair Repulsion ... Pairs Lone Pairs Electron Geometry (hybridization) Molecular Geometry (AXE Formula) Bond Angles 3-D example 2 1 1-3 Linear AXE (sp) Linear (AXE, AXE 2, 3) 180 2 0 Linear (AX 2) 3 3 0 Trigonal Planar ) (sp2) Trigonal Planar (AX 3 120 2 1 Bent (AX 2 E) < 120 4 4 0 Tetrahedral < 109.5 (sp3)
Using the VSEPR Chart to Determine Shape and Bond Angle. To use a VSEPR table, first determine the coordination number or number of electron pairs. Count the valence electrons of the central atom. Add an electron for each bonding atom.
The molecular geometry, or three-dimensional shape of a molecule or polyatomic ion, can be determined using valence-shell electron-pair repulsion (abbreviated VSEPR and pronounced “VES-per”) theory, in which the basic principle is valence electrons around a central atom stay as far apart as possible to minimize the repulsions.
VSEPR Chart Total Domains Lone Pairs Example Lewis Structure Shape Hybridization Bond Angle 2 0 CO 2 Linear sp 180° 3 0 BH 3 Trigonal Planar sp 2 120° 3 1 SO 2 Bent 4 0 CH4 Tetrahedral sp3 109.5° 4 1 NH3 Trigonal Pyramidal 4 2 H2O Bent. Author: Rebecca Williams Created Date:
Summary VSEPR and Hybridization Table. Electron Domains. Electron-Domain Geometry. Predicted Bond Angle(s) Hybridization of Central Atom.
