Repulsion Strength

[Tracy Tolentino_2E]

Why is the electron repulsion strength stronger for lone-lone PR> lone-bonding PR> bonding-bonding PR?

[Maya Serota 3G]

Lone pairs are close to each other than any other combination of pairs. Therefore lone -lone have the greatest repulsion strength.

[claribel charway 1I]

Lone pairs have the greatest repulsion because they are closer together. Lone bonding is the next strongest because it is the next closest. Bonding-bonding pairs are the weakest because the electrons are more spread apart since each atom takes an electron within its cloud.

[Mulin_Li_2J]

Electron repulsion between electron density regions is directly proportional to the size of electron clouds. Since lone paired electrons sense attraction only from one nucleus, they typically take up a larger space and thus exert a larger repulsion force. On the other hand, bonding paired electrons sense attractions from two nucleus, and thus they take up a smaller space and generate a smaller repulsion force. Therefore, lone pairs-lone pairs > lone pairs-bonding pairs > bonding pairs-bonding pairs.

Hope this can help!

[Yiyang Jen Wang 4G]

It depends on the distance between them. Since lone pairs are the closest to each other, they have the greatest repulsion strength.

[ShravanPatel2B]

Lone pairs have the greatest repulsion strength because they are the closest to eachother.