intermolecular forces

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Madeline Lequang 1G
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Joined: Fri Sep 28, 2018 12:27 am

intermolecular forces

Postby Madeline Lequang 1G » Thu Nov 29, 2018 9:49 am

How can I determine if there is a dipole-dipole or dipole induced dipole? Do we just have to know if the compound is polar?

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Re: intermolecular forces

Postby Chem_Mod » Thu Nov 29, 2018 11:33 am

A dipole-dipole intermolecular force occurs between polar molecules because each of these molecules have a permanent dipole due to an unequal distribution of electron/charge.

A dipole-induced dipole IMF is exactly what the name implies. It is is between a polar molecule (net dipole) and a nonpolar molecule (no net dipole). The polar molecule can induce a dipole in the other molecule by distorting its electron cloud, creating a temporary dipole and interaction. Recall polarizability and polarizing power.

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