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    what factors are used to determine whether a molecule will be polar or nonpolar?
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    If a molecule is non-polar, it will either have no dipoles (in other words the bonded atoms have no or negligible difference in electronegativity, so the bonded electrons are shared evenly) OR it will have identical dipoles arranged in a symmetrical fashion, so that they cancel out.
    For example, a chlorine molecule (Cl₂) is non polar because the Cl-Cl bond shares the electrons evenly and there’s is no charge separation.

    In tetrachloromethane (CCl₄) the molecule does have 4 dipoles, but these are identical (all C-Cl bonds) and they are arranged in such a fashion that they cancel each other out. The bonds are polar, but overall the molecule is not.

    Edit to add that the electronegativity difference between carbon and hydrogen is so small, that C-H bonds are not considered polar. Therefore, hydrocarbons (Like alkanes) are non-polar.
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    And if the molecule is polar they have polar bonds but not symmetrical, and eneven distribution of electrons?
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    Is there anything else I need to know at a level?
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