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Why is diffusion in solids less as compa...

Why is diffusion in solids less as compared to the liquids?

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In solids, the constituent particles are very closely packed and the number of vacant space are comparatively less as compared to the liquids where the particles are not so closely packed. Therefore, the diffusion in the solids is almost negligible while liquids can diffuse.
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Knowledge Check

  • Liquids diffuse slowly as compared to gases because

    A
    the molecules are held together by strong intermolecular forces
    B
    the molecular of liquids are heavy
    C
    liquids have definite shape
    D
    the molecules of liquids undergo large number of collisions with the neighbouring molecules

  • The potential energy of molecule on the surface of a liquid as compared to in side the liquid is

    A
    zero
    B
    smaller
    C
    the same
    D
    greater

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