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Is there an easy way to remember which type of intermolecular forces are possible by looking at a molecule? What are the key characteristics of each type of intermolecular force? (For example, dispersion forces are present in all molecules?)
Dipole moments can also be found in polar molecules, depending on the electronegativity difference and the shape of the molecule. For instance, a tetrahedral allows for a dipole moment to occur whereas in an octahedral the non-central atoms pull away from each and cancel each other out.
The most important factor in determining the intermolecular forces on a molecule is the polarity of the molecule. A polar molecule will be involved in forces such as dipole-dipole. A nonpolar molecule cannot be involved in dipole-dipole forces because there is no charge, therefore there is no dipole.
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