Polarizability and boiling point

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Kaleb Tesfaye 1I
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Polarizability and boiling point

Postby Kaleb Tesfaye 1I » Sun May 20, 2018 5:33 am

How does polarizability relate to the boiling point of a molecule? does a molecule have a low boiling point if it has a high Polarizability?

Mei Blundell_1J
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Re: Polarizability and boiling point

Postby Mei Blundell_1J » Sun May 20, 2018 11:20 am

High polarizability means more covalent character,which means tighter bonding, and therefore means high boiling point. Please correct me if I'm wrong, I'm not quite sure either.

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Re: Polarizability and boiling point

Postby Chem_Mod » Mon May 21, 2018 11:44 pm

The more polarizable a molecule is, the more you are able to distort the electron cloud around the molecule. Thus, you can induce dipole moments between the molecules. These dipole interactions are intermolecular interactions and the stronger the intermolecular interaction, the more likely the molecules are attracted to each other. Thus, higher interaction leads to higher boiling point (because you force molecules to further distances in gases than liquids)

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