CHEM 1AA3 Lecture Notes - Lecture 5: London Dispersion Force, Diple, Intermolecular Force
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15 May 2016
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2: common intermolecular force is london dispersion forces. Lectrons movng from one side from another in a molecuke. Generally molecules that are nonpolar still have forces between them. Dipole dipole: have a permant dipole emoent in molecule. Hydrogen bonidng: extreme case of dipole dipole force. Need 3 atoms to form hydrgogen bond. Oh should be inter moleucularly bonded to something else. Solubility has to do with whether the ion-ion forces are stronger or the ion dipole forces. If ion-ion then they combine and you get solid and vise versa with ion dipole. Intra forces form the molecules are within moleucles. 3: atom or molecule that"s no n polar, mostly doenst have dipole moment. Electrons can be evenly distributed so non polar. Or can be more on he left side so diple moment. This cuases the negbouring atom more negative since attarcion. Dipole moment can fall of very quickly. Greater intsnaoues dipole by having more electrons.
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