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VSEPR handout - Trigonal bipyramid Trigonal bipyramid AsF 5...

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VSEPR Theory (Molecular Shapes) A = the central atom, X = an atom bonded to A, E = a lone pair on A Note: There are lone pairs on X or other atoms, but we don't care. We are interested in only the electron densities or domains around atom A. Total Domains Generic Formula Picture Bonded Atoms Lone Pairs Molecular Shape Electron Geometry Example Hybridi -zation Bond Angles 1 AX 1 0 Linear Linear H 2 s 180 AX 2 2 0 Linear Linear CO 2 2 AXE 1 1 Linear Linear CN - sp 180 AX 3 3 0 Trigonal planar Trigonal planar AlBr 3 AX 2 E 2 1 Bent Trigonal planar SnCl 2 3 AXE 2 1 2 Linear Trigonal planar O 2 sp 2 120 AX 4 4 0 Tetrahedral Tetrahedral SiCl 4 AX 3 E 3 1 Trigonal pyramid Tetrahedral PH 3 AX 2 E 2 2 2 Bent Tetrahedral SeBr 2 4 AXE 3 1 3 Linear Tetrahedral Cl 2 sp 3 109.5
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