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VESP and Polarity

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VESP and Polarity

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    1. VESP and Polarity

    2. 8.4 Tetrahedral Systems: Carbon Space-filling model

    3. 8.4 Tetrahedral Systems: Carbon Why a Tetrahedron?

    4. Valence Shell Electron Pair Repulsion model (VSEPR) According to this model, for main group elements, electron pairs will be as far apart from each other as possible. This occurs in three dimensional space. Both bonded and unshared pairs will occupy space with unshared pairs taking up more space. The geometry is based on the total number of electron pairs - total coordination number.

    5. VSEPR shapes Coordination Electron pairs General Number Bonding Unshared Formula Shape 2 2 0 AB2 Linear 3 3 0 AB3 Trigonal planar 2 1 AB2 Bent 4 4 0 AB4 Tetrahedral 3 1 AB3 Trigonal pyramidal 2 2 AB2 Bent 1 3 AB Linear

    6. Linear - CO2

    7. Trigonal planar, BCl3

    8. Bent, H2O

    9. Pyramidal, NH3

    10. Tetrahedral, CH4

    11. Molecular geometries based on tetrahedral

    12. Other geometries. Other shapes are also observed. Five bonds or lone electron pairs Trigonal bipyramidal Seesaw T-shaped Linear Six bonds or lone electron pairs Octahedral Square pyramidal Square planar

    13. VSEPR shapes Coordination Electron pairs General Number Bonding Unshared Formula Shape 5 5 0 AB5 Trigonal bipyramidal 4 1 AB4 Seesaw 3 2 AB3 T-shaped 2 3 AB2 Linear 6 6 0 AB6 Octahedral 5 1 AB5 Square pyramidal 4 2 AB4 Square Planar

    14. Trigonal bipyramidal, RuCl5

    15. Square planar, NiCl4

    16. Octahedral, CoCl6

    17. Molecular geometry

    19. Polarity

    20. 8.6 Confirmation of Molecular Shapes Dipole Moments

    22. 8.6 Confirmation of Molecular Shapes Dipole Moments

    23. 8.6 Confirmation of Molecular Shapes Dipole Moments

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