9.2 Polarity

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    Polar bonds, due to differences in electronegativity result in one atom being partially positive (𝛅+) and one partially negative (𝛅-). The larger the difference in electronegativity, the more polar the bond.

    electronegativity pauling scale

    Molecular Polarity

    Molecules with more than 1 polar bond may be termed polar or nonpolar depending how polar each bond is and the geometry in which they are arranged.

    -If the polarity of all the individual bond dipoles ‘cancel’ the molecule is nonpolar. 

    -If the polarity of all the individual dipoles do not cancel then the molecule is polar.

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