•Lewis structures give atomic connectivity –which atoms are physically connected to which in a molecule, but not the shape and size of the molecule•Theshape of a moleculeis determined by itsbond anglesandbond length --- consider CCl4molecule below•experimentally we find all Cl-C-Cl bond angles are 109.5°. Thus, the molecule cannot be planar – cannot be predicted from Lewis structure drawing9.1 Molecular Shapes9.1 Molecular ShapesTetrahedron objectBall-and-stick modelSpace-filling model
Angles,Angles,and and ShapesShapesthe key words for this chapterthe key words for this chapterto think in to think in three dimensionsthree dimensionsis a must
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