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III. Molecular Polarity (p. 183)

Ch. 6 – Molecular Structure. III. Molecular Polarity (p. 183).  +.  -. H Cl. A. Dipole Moment. Direction of the polar bond in a molecule. Arrow points toward the more e - neg atom. B. Determining Molecular Polarity. Depends on : dipole moments molecular shape. F. BF 3. B. F. F.

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III. Molecular Polarity (p. 183)

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  1. Ch. 6 – Molecular Structure III. Molecular Polarity(p. 183) C. Johannesson

  2. + - H Cl A. Dipole Moment • Direction of the polar bond in a molecule. • Arrow points toward the more e-neg atom. C. Johannesson

  3. B. Determining Molecular Polarity • Depends on: • dipole moments • molecular shape C. Johannesson

  4. F BF3 B F F B. Determining Molecular Polarity • Nonpolar Molecules • Dipole moments are symmetrical and cancel out. C. Johannesson

  5. O net dipole moment H2O H H B. Determining Molecular Polarity • Polar Molecules • Dipole moments are asymmetrical and don’t cancel . C. Johannesson

  6. H net dipole moment CHCl3 Cl Cl Cl B. Determining Molecular Polarity • Therefore, polar molecules have... • asymmetrical shape (lone pairs) or • asymmetrical atoms C. Johannesson

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