Lone Pair Repulsion?

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

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Lone Pair Repulsion?

Postby 905385366 » Fri Nov 15, 2019 11:46 am

Why do regions of lone pairs of electrons repel each other more than lone-bond or bond-bond regions?

Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Lone Pair Repulsion?

Postby 405335722 » Fri Nov 15, 2019 11:52 am

The elctrons arent bound to another atom so there is more repulsion. Most likely there is no attraction from another atomn's protons.

Justin Quan 4I
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Joined: Sat Sep 14, 2019 12:17 am

Re: Lone Pair Repulsion?

Postby Justin Quan 4I » Fri Nov 15, 2019 12:12 pm

Due to the shape of the electron density, lone pairs have greater repulsion force than bonding pairs of electrons. The shape of the orbitals that hold lone pairs is shorter and rounder, much like a balloon, whereas bonding pairs are more elongated, thus they have less repulsion force.

Kurtis Liang 3I
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Re: Lone Pair Repulsion?

Postby Kurtis Liang 3I » Fri Nov 15, 2019 12:13 pm

Lone pairs are further from the central atom because they aren't being pulled towards another atom, so they will repel more.

Jessica Tran_3K
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Joined: Thu Jul 25, 2019 12:17 am

Re: Lone Pair Repulsion?

Postby Jessica Tran_3K » Fri Nov 15, 2019 12:18 pm

Also, additional lone pairs force bonding electrons closer together.

Gwen Casillan 3E
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Re: Lone Pair Repulsion?

Postby Gwen Casillan 3E » Fri Nov 15, 2019 12:25 pm

Lone pair electrons are further from the positively-charged nucleus of an atom compared to bonding pairs of electrons and are therefore bound with less electrostatic force, causing them to have stronger repulsive forces than bonding pairs of electrons. Lone pairs have a larger range of negativity compared to bonding pairs, resulting in stronger repulsive forces between other atoms.

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