Define dispersion forces. Write characteristic features of dispersion forces.

Define dispersion forces. Write characteristic features of dispersion forces.
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Answer :

Ans. Dispersion forces: The forces of attraction between two temporary dipoles.
 Characteristics of dispersion forces:
(i) These forces are always attractive.
(ii) These forces are effective only at short distance.
(iii) Their magnitude depends on the polarisability of the particles
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