(Polar molecules, Non-polar molecules, etc.)
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Why are single, double, and triple bonds all considered one region of electron density for the VSEPR? I understand that all the electrons are clustered in that one region, but wouldn't having more electrons (from double and triple bonds) create greater repulsion and bend angles even more in the VSEPR?
Considering that lone pairs can freely move around their region while bonded electrons are stuck in between atoms explains why lone pair - lone pair interactions repulse electrons farther. Like you said, that bonded electrons are clustered into one region, but lone pair regions take up more space since the can move more freely in their density region.
As you stated, they are one region of electron density because the electrons in a bond, whether it is single, double, or triple, are confined to the area between the two atoms. They are held in this area due to their attraction to the atoms' nuclei. I believe that this force of attraction probably outweighs any possible repulsion. Also, the bond angles would only be affected when there is repulsion between two separate electron density regions, or bonds.
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