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Jessica Castellanos
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Postby Jessica Castellanos » Sun Nov 17, 2019 9:53 am

How do you know if a molecule has a dipole?

Posts: 61
Joined: Sat Sep 28, 2019 12:16 am

Re: Dipoles

Postby MMckinney_4H » Sun Nov 17, 2019 10:09 am

You should look at the electronegativity of the atoms bonded in the molecule. The larger the difference in electronegativity, the stronger (more polar) the dipole.

Ruby Tang 2J
Posts: 102
Joined: Fri Aug 30, 2019 12:15 am

Re: Dipoles

Postby Ruby Tang 2J » Sun Nov 17, 2019 12:39 pm

Additionally, dipoles can cancel each other out. For example, in a carbon dioxide molecule, even though there is a difference in electronegativity between the carbon atom and each of the two oxygen atoms, the dipoles are pointing in the opposite direction (each pointing toward an oxygen atom) and therefore cancel each other out. Thus, when figuring out whether a molecule has a net dipole moment, you also have to consider its molecular geometry.

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