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# shapes - 5 E square pyramidal<90° polar sp 3 d 2 A X X...

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Shapes of Molecules “Things” on central atom 1 Lone Bonds Pairs AX m E n 2 Shape Bond angles “Usual” Polarity 3 Hybrid- ization Appearance 2 0 AX 2 linear 180° nonpolar sp A X X 3 0 AX 3 trigonal planar 120° nonpolar sp 2 A X X X = A X X X 2 1 AX 2 E bent, nonlinear <120° polar sp 2 A X X 4 0 AX 4 tetrahedral 109.5° nonpolar sp 3 A X X X X 3 1 AX 3 E trigonal pyramidal <109.5° polar sp 3 A X X X 2 2 AX 2 E 2 bent, nonlinear <109.5° polar sp 3 A X X A X X = 5 0 AX 5 trigonal bipyramidal 120° eq 90° ax nonpolar sp 3 d A X X X X X 4 1 AX 4 E unsymmetrical tetrahedron, seesaw <120° eq <90° ax polar sp 3 d A X X X X 3 2 AX 3 E 2 T-shaped 90° polar sp 3 d A X X X 2 3 AX 2 E 3 linear 180° nonpolar sp 3 d A X X 6 0 AX 6 octahedral 90° nonpolar sp 3 d 2 A X X X X X X 5 1 AX
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Unformatted text preview: 5 E square pyramidal <90° polar sp 3 d 2 A X X X X X 4 2 AX 4 E 2 square planar 90° nonpolar sp 3 d 2 A X X X X _______________________ 1 “Things” include bonds and lone pairs. Remember, a multiple bond counts as one “thing”! 2 X = surrounding atom; E = lone pairs 3 This is the polarity when all of the atoms connected to the central atom are identical (AX m ). If more than one type of atom is connected to the central atom, you will have to look at the overall shape of the molecule and the relative polarity of each bond to determine the polarity....
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