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Unformatted text preview: Lone pairs take up more space than bonding electrons Expect that heteronuclear structures will show different effects on shape based on the nature of bonding electrons 2 pairs of e- in double bonds should repel more than one pair (single bond) IF all the bonds of PF5 were the same length, there would be more electron repulsions in the equatorial interaction VSEPR 1) Electrons around a central atom with organize to minimize e- pair repulsions 2) Most prohibitive interaction is lone-pair—lone-pair 3) In structures with 90° interactions, the most favored structure is the one with the fewest 90° lone pair interactions Dipole Moments Electronegativity: e- will be shifted towards the element with the higher electronegativity Dipolar molecule: can be oriented in an electric field The nature of charge separation can be quantified by the dipole moment (mu) (mu) = q x r...
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This note was uploaded on 09/19/2011 for the course CHEM 43L taught by Professor Therien during the Fall '09 term at Duke.
- Fall '09
- Covalent Bonds