BONDING HELP - Tros Chemistry Chapter 10 Notes Chemical...

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Tro’s Chemistry Chapter 10 Notes – Chemical Bonding II: Molecular Shape Page 1 of 10 Acknowledgements: Some of the images are adopted from Tro’s textbook, the only purpose of which is to enhance student learning. Key skills: Using VSEPR theory to predict the basic shapes of molecules with bonding and nonbonding pair of electrons. Using molecular shape to determine polarity of a molecule, predicting hybridization involved. Review questions: 1-7, 14, 16, 17. Suggested problems: 29, 31, 33, 37, 43, 47, 49, 59, 63, 81. 10.1&2 VSEPR Theory: VSEPR theory predicts the 3-D geometric shape of a covalent compound or ion. It looks at the distribution of the electron groups/domains (lone pair, bond pair) around the central atom. Electron domains repel one another to minimize the repulsion and increase the stability of the species. We need to recognize the central (or interior) atom and electron (lone and bond) pair around it. Five Basic Shapes 1. Linear: 2. Triangular (or trigonal) planar 3. Tetrahedral:
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Tro’s Chemistry / Chapter 10 Notes – Chemical Bonding II: Molecular Shape / Page 2 of 10 4. Triangular (trigonal) bipyramidal: 5. Octahedral: (Refer to Example 10.1 and Practice 10.1 for problem solving help/hint.) 10.3&4 VSEPR Theory: The Effect of Lone Pairs and Predicting Molecular Geometries ED = 4:
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Tro’s Chemistry / Chapter 10 Notes – Chemical Bonding II: Molecular Shape / Page 3 of 10 ED = 5: ED = 6:
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