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  4. Two atoms X and Y are non-polar and electrically symmetrical <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/c-9syjc1wsmyopeuhg.jpg /> What type of intermolecular force of attraction can be developed between them?

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Q. Two atoms X and Y are non-polar and electrically symmetrical
Question
What type of intermolecular force of attraction can be developed between them?

NTA AbhyasNTA Abhyas 2022

Solution:

In non-polar atom, a dipole may develop momentarily. If the atom X becomes unsymmetrical resulting in development of instantaneous dipole for a very short time, it distorts the electron density of Y which is close to it and dipole is induced in the atom Y. Temporary dipoles X and Y attract each other. This attraction is called London or dispersion force.