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Question
The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles but their magnitude depends upon
Options
Charge of interacting particles
Mass of interacting particles
Polarisability of interacting particles
Strength of permanent dipoles in the particles
Solution
Polarisability of interacting particles
Explanation:
London dispersion forces operate only over very short distance. The energy of interaction varies as
1/(distance between two interacting particles)6 Large or more complex are the molecules, greater is the magnitude of London forces. This is obviously due to the fact that the large electron clouds are easily distorted or polarised.
Hence, greater the polarisability of the interacting particles, greater is the magnitude of the interaction energy.
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