Polarity and dipole moment

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rkang00
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

Polarity and dipole moment

Postby rkang00 » Sat Nov 17, 2018 12:42 pm

If dipole moments that cancel each other result in nonpolarity does this mean that symmetric atoms and molecules are generally nonpolar?

Andre_Galenchik_2L
Posts: 69
Joined: Fri Sep 28, 2018 12:23 am

Re: Polarity and dipole moment

Postby Andre_Galenchik_2L » Sat Nov 17, 2018 12:59 pm

Yes, symmetric molecules tend to be nonpolar. For instance, carbon dioxide (linear shape) is nonpolar as the dipole moments cancel each other out.

Letizia Ye 4F
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Polarity and dipole moment

Postby Letizia Ye 4F » Sat Nov 17, 2018 1:38 pm

Since the dipoles are equal in magnitude but opposite in direction, they will add to zero, meaning there is no overall dipole for the molecule.

Manas Jinka
Posts: 32
Joined: Fri Sep 28, 2018 12:26 am

Re: Polarity and dipole moment

Postby Manas Jinka » Sun Nov 18, 2018 2:46 pm

Symmteric molecules are nonpolar in nature. Unsymmetric molecules are polar in nature.

hazelyang2E
Posts: 57
Joined: Fri Sep 28, 2018 12:23 am

Re: Polarity and dipole moment

Postby hazelyang2E » Sun Nov 18, 2018 3:58 pm

Yes, symmetric atoms and molecules will generally be nonpolar because the symmetric dipole moments will cancel each other out because they are moving in opposite directions. So, even if the bonds are polar within a molecule, they will cancel each other out and make the molecule nonpolar overall.


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