Repulsion Strength

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

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Mariam Baghdasaryan 4F
Posts: 37
Joined: Fri Sep 28, 2018 12:29 am

Repulsion Strength

Postby Mariam Baghdasaryan 4F » Fri Nov 16, 2018 1:49 pm

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

juliefilice 4A
Posts: 31
Joined: Fri Sep 28, 2018 12:27 am

Re: Repulsion Strength

Postby juliefilice 4A » Fri Nov 16, 2018 1:53 pm

The bonding electron pair shared in a sigma bond with an adjacent atom lies further from the central atom than a nonbonding (lone) pair of that atom, which is held close to its positively charged nucleus. Thus, repulsion from a lone pair is greater than repulsion from a bonding pair.

Tatiana 4B
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Repulsion Strength

Postby Tatiana 4B » Fri Nov 16, 2018 2:18 pm

Being closer to the central atom causes lone-pairs take up more of the available “bonding space” and therefore having a stronger repulsion strength.

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