Polar molecules

(Polar molecules, Non-polar molecules, etc.)

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Steven Garcia 1H
Posts: 79
Joined: Fri Sep 28, 2018 12:16 am

Polar molecules

Postby Steven Garcia 1H » Sun Nov 25, 2018 3:30 pm

If a molecule has a lone pair, can we predict that it will be a polar molecule? Or is this not always the case?

Aili Ye 4L
Posts: 58
Joined: Fri Sep 28, 2018 12:16 am

Re: Polar molecules

Postby Aili Ye 4L » Sun Nov 25, 2018 3:34 pm

Often, the lone pair can distort the symmetry and will create a polar molecule, but it is not always the case.

Posts: 27
Joined: Fri Apr 06, 2018 11:03 am

Re: Polar molecules

Postby Isabelle_Maletz_3E » Sun Nov 25, 2018 3:57 pm

In most cases a lone pair will cause the entire molecule to be polar. However, if there are enough bonded atoms around the central atom, the polarity will decrease as the surrounding elements make up for the distortion caused by the lone pair.

Hedi Zappacosta 1E
Posts: 66
Joined: Fri Sep 28, 2018 12:27 am

Re: Polar molecules

Postby Hedi Zappacosta 1E » Sun Nov 25, 2018 4:03 pm

A good example of this is water. Without the lone pair on the Oxygen atom, the molecule would be nonpolar. However, the extra electrons give the molecule a bent shape, making it polar.

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