repulsion strength

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Shreya Tamatam 3B
Posts: 30
Joined: Fri Sep 28, 2018 12:25 am

repulsion strength

Postby Shreya Tamatam 3B » Sat Dec 01, 2018 12:24 pm

Why is lone-lone pair repulsion strength stronger than lone-bonding pair repulsion strength?

Ibrahim Malik 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 1 time

Re: repulsion strength

Postby Ibrahim Malik 1H » Sat Dec 01, 2018 12:49 pm

The lone pair electron is more spread out and occupies a larger volume, which causes a higher repulsion between two lone pairs. Bonding pairs are pulled in more tightly and occupy less space, which is why lone- bonding pairs have a lower repulsion strength.

Sarah Jeong 4F
Posts: 30
Joined: Fri Sep 28, 2018 12:27 am

Re: repulsion strength

Postby Sarah Jeong 4F » Sat Dec 01, 2018 2:49 pm

Like electrons in a lone pair has a stronger repulsion strength than a shared bond electron, two lone pairs would have a stronger repulsion strength than a shared bond electron+lone pair.

SydBenedict2H
Posts: 60
Joined: Wed Nov 08, 2017 3:00 am

Re: repulsion strength

Postby SydBenedict2H » Sat Dec 01, 2018 8:43 pm

This is why when doing VSEPR if there is a linear molecule (2 bonds) and you add a lone pair it becomes bent. The repulsion from the lone pair is so strong that the bonds move closer towards each other to be away from the lone pair.


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