Structure & Reactivity III
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Why are physical properties of alkanes predictable?
intermolecular or van der Waals forces.
Solids, such as salts (ionic compounds), are rigidly held in a crystal lattice, mainly by strong _______ forces. Non ionic but polar molecules, such as chloromethane (CH3Cl), are attracted by weaker ______-______ interactions (also of ______ origin). Finally, the nonpolar alkanes attract each other by _______ forces, which are due to electron correlation.
- Coulomb forces
- dipole-dipole interactions
- coulombic origin
- London forces
when one alkane molecule approaches another, repulsion of the electrons in one molecule by those in the other results in correlation of their movement.
London forces are _____ in contrast to coulomb forces, which change with the ______ of the distance between charges, while London forces change with the _____ power of the distance between molecules.
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