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Molecular Geometry Ac

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Molecular Geometry Ac

  1. 1. I can describe the VSEPR theory<br />I can determine the VSEPR model of a given molecule<br />I can predict the shape of a molecule using VSEPR theory<br />Learning Targets<br />
  2. 2. The properties of molecules depend not only on the type of bonding but also on molecular geometry or the shape of the molecule. <br />There are two theories used to predict molecular geometry: VSEPR theory (we will discuss) and hybridization (we will not discuss)<br />Molecular Geometry<br />
  3. 3. VSEPR – Valence Shell Electron Pair Repulsion<br />Theory is used to predict the shape of molecules. <br />This theory is based on the idea that pairs of electrons surrounding an atom repel each other causing the electron pairs to be as far apart from each other as possible. <br />VSEPR Theory<br />
  4. 4. The Lewis structure is used to determine the VSEPR model of the molecule.<br />The following symbols are used for the VSEPR model<br />VSEPR Theory<br />Symbols<br />
  5. 5. The VSEPR model is used to determine the geometry and bond angles of the molecule<br />VSEPR Models<br />
  6. 6. Other VSEPR Models<br />
  7. 7. VSEPR Models<br />
  8. 8. Phosphorus Trichloride<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  9. 9. PCl3<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  10. 10. PCl3<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />. .<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />P<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />. .<br />
  11. 11. PCl3<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />. .<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />P<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />VSEPR Model: AB3E<br />. .<br />. .<br />. .<br />
  12. 12. PCl3<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />. .<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />P<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />VSEPR Model: AB3E<br />. .<br />. .<br />. .<br />Geometry: Trigonal Pyramidal<br />
  13. 13. CH2Cl2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  14. 14. CH2Cl2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />H<br />. .<br />. .<br />C<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />H<br />
  15. 15. CH2Cl2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />H<br />VSEPR Model: AB4<br />. .<br />. .<br />C<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />. .<br />. .<br />H<br />
  16. 16. CH2Cl2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />H<br />VSEPR Model: AB4<br />. .<br />. .<br />C<br />Cl<br />Cl<br />.<br />.<br />.<br />.<br />Geometry: Tetrahedral<br />. .<br />. .<br />H<br />
  17. 17. CO2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  18. 18. CO2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />. .<br />. .<br />C<br />O<br />O<br />. .<br />. .<br />
  19. 19. CO2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2<br />. .<br />. .<br />C<br />O<br />O<br />. .<br />. .<br />
  20. 20. CO2<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2<br />. .<br />. .<br />C<br />O<br />O<br />Geometry: Linear<br />. .<br />. .<br />
  21. 21. HCN<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  22. 22. HCN<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />C<br />N<br />H<br />. .<br />
  23. 23. HCN<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2<br />C<br />N<br />H<br />. .<br />
  24. 24. HCN<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2<br />C<br />N<br />H<br />Geometry: Linear<br />. .<br />
  25. 25. Nitrite Ion<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  26. 26. NO2–<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />
  27. 27. NO2–<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />. .<br />. .<br />. .<br />N<br />O<br />O<br />. .<br />. .<br />. .<br />
  28. 28. NO2–<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2E<br />. .<br />. .<br />. .<br />N<br />O<br />O<br />. .<br />. .<br />. .<br />
  29. 29. NO2–<br />Practice Problems<br />Determine the VSEPR model and geometry for each of the following molecules.<br />VSEPR Model: AB2E<br />. .<br />. .<br />. .<br />N<br />O<br />O<br />Geometry: Bent<br />. .<br />. .<br />. .<br />

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