Lone Pairs

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

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Nicholas Kull_3L
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Joined: Fri Sep 28, 2018 12:23 am

Lone Pairs

Postby Nicholas Kull_3L » Fri Nov 30, 2018 9:06 am

Can someone explain why the lone pairs affect the structure of the VSEPR models?

Eunice Lee 1A
Posts: 60
Joined: Wed Oct 03, 2018 12:16 am

Re: Lone Pairs

Postby Eunice Lee 1A » Fri Nov 30, 2018 9:10 am

Lone pairs repulse bonds even more than other bonds do because they belong to the respective atom alone instead of being shared. Because of this, they push on the existing bonds more, resulting in an even more distorted shape. They are not considered when identifying the shape, but they contribute to the formation of the molecule's shape.

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

Re: Lone Pairs

Postby Hedi Zappacosta 1E » Fri Nov 30, 2018 11:32 am

A lone pairs repel a bonding pair more than a bonding pair repels a bonding pair. Two lone pairs have the highest level of repulsion, then a lone pair and a bonded pair, and two bonded pairs have the lowest level of repulsion.

Lopez_Melissa-Dis4E
Posts: 66
Joined: Fri Sep 28, 2018 12:20 am

Re: Lone Pairs

Postby Lopez_Melissa-Dis4E » Fri Nov 30, 2018 12:34 pm

Lone pairs repel the other bonding pairs, therefore the bonding pairs push away from the lone pairs causing a change in the VSPER formula, molecular geometry, hybridization, polarity, and bond angles.

Michael Novelo 4G
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Joined: Fri Sep 28, 2018 12:28 am

Re: Lone Pairs

Postby Michael Novelo 4G » Fri Nov 30, 2018 3:34 pm

The lone paired cause repulsion with other atoms. The more lone pairs there are the more repulsion there is causing bond angles in molecular shape to decrease depending on the plane it is in. Lone pairs are the reason why molecules such as H2O have a bent shape, it has 2 lone pairs of electrons which is a stronger repulsion compared to a molecule that has one pair of electrons such as SO2.

Sang Hyoun Hong 3G
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Joined: Fri Sep 28, 2018 12:27 am

Re: Lone Pairs

Postby Sang Hyoun Hong 3G » Mon Dec 03, 2018 1:35 am

Lone pairs push existing bonds and thus distort the original shape of the atom. The repulsion between lone pair electrons and shared electrons is what causes the electron arrangement and molecular shape of a molecule to differ.

Kenan Kherallah 2C
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Joined: Fri Sep 28, 2018 12:17 am

Re: Lone Pairs

Postby Kenan Kherallah 2C » Mon Dec 03, 2018 1:48 am

Lone pairs repwl bonding pairs more than bonding pairs repel each other causing the bond angles to be smaller than usual.

405098546
Posts: 32
Joined: Fri Sep 28, 2018 12:24 am

Re: Lone Pairs

Postby 405098546 » Mon Dec 03, 2018 2:22 am

It is because lone pairs are areas of high electron density that have effects of repulsion that alter the shape of a molecule.

Arlene Linares 3A
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Joined: Fri Sep 28, 2018 12:25 am

Re: Lone Pairs

Postby Arlene Linares 3A » Mon Dec 03, 2018 8:30 pm

Can someone explain lone pairs to me?

MichelleRamirez_2F
Posts: 63
Joined: Fri Sep 28, 2018 12:28 am

Re: Lone Pairs

Postby MichelleRamirez_2F » Tue Dec 04, 2018 9:43 pm

Arlene Linares 3A wrote:Can someone explain lone pairs to me?
Lone pairs are the pair of electrons that do not get shared with another atom in the molecule.

MichelleRamirez_2F
Posts: 63
Joined: Fri Sep 28, 2018 12:28 am

Re: Lone Pairs

Postby MichelleRamirez_2F » Tue Dec 04, 2018 9:47 pm

Lone pairs affect the structure of the VSEPR model beacues they have the highest repulsion so they try to be fathest apart from each other. Also they cause repulsion with the other atoms bonded with the central atom which is why the angles of some shapes turn out to be slightly smaller than the original angle.

Ricardo Martin 1J
Posts: 63
Joined: Fri Sep 28, 2018 12:15 am

Re: Lone Pairs

Postby Ricardo Martin 1J » Thu Dec 06, 2018 10:32 am

Lone pairs are able to repel bond pairs more than bond pairs are able to repel each other, therefore the bond angles are made smaller by lone pairs.


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