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Molecular Geometry Section 3

Understand the fundamental shapes of molecules using the VSEPR model. Learn to draw and identify the 7 key shapes for determining reaction ability. Flashcards available!

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Molecular Geometry Section 3

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  1. Molecular GeometrySection 3

  2. The Shape of Molecules • The shape of molecules determines reaction ability • The model we use is the VSEPR model • Valence Shell Electron Pair Repulsion

  3. VSEPR Model • 7 key shapes you will need to be able to draw and identify • Flashcards!

  4. Linear • Example: CO2 • Areas of Electrons: 2 • Bonds: 2 • Lone pairs: 0 • Angle: 180° • Hybrid Orbitals: sp

  5. Trigonal Planar • Example: BCl3 • Areas of Electrons: 3 • Bonds: 3 • Lone Pairs: 0 • Angle: 120° • Hybrid Orbitals: sp²

  6. Tetrahedral • Example: CI4 • Areas of Electrons: 4 • Bonds: 4 • Lone Pairs: 0 • Angle: 109.5° • Hybrid Orbitals: sp³

  7. Trigonal Pyramidal • Example: PH3 • Areas of Electrons: 4 • Bonds: 3 • Lone Pairs: 1 • Angle:<109.5° • Hybrid Orbitals: sp³

  8. Bent • Example: H2O • Areas of Electrons: 4 • Bonds: 2 • Lone Pairs: 2 • Angle: <109.5° • Hybrid Orbitals: sp³

  9. Trigonal Bipyramidal • Example: PBr5 • Areas of Electrons: 5 • Bonds: 5 • Lone Pairs: 0 • Angles: 90°, 120° • Hybrid Orbitals: sp³d

  10. Octahedral • Example: SF6 • Total Areas of Electrons: 6 • Bonds: 6 • Lone Pairs: 0 • Angle: 90° • Hybrid Orbitals: sp³d²

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