what is intermolecular force of attraction and why does it vary from solids to liquids to gases?

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  • 1 decade ago
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    Intermolecular forces are forces that act between stable molecules or between functional groups of macromolecules. Intermolecular forces include momentary attractions between molecules, diatomic free elements, and individual atoms. These forces, most notably London Dispersion forces, dipole-dipole interactions and hydrogen bonding, are significantly weaker than either ionic or covalent bonding, but still have a noticeable chemical effect (see hydrogen bonding in water). Intermolecular forces are due to differences in charge density in molecules.

    you know that the bonding differs in each and every solids. and it is the cause for the varying. understood?

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  • Anonymous
    1 decade ago

    The attractive forces between molecules are called intermolecular forces. Intermolecular attractions hold two or more molecules together. Intermolecular attractions can be of the following types:

    1) Dipole-dipole interactions

    2) London forces (Dispersion forces)

    3) Hydrogen bonds.

    Intermolecular attractions are often known as Van der Waal's forces.

    These forces originate on account of coulombic interactions between two charged particles.

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  • its simple

    forces of attraction b/w the molecules of the substance

    for ex ice is solid form of water -it is compact and tightly packed so it has most intermol force

    water is liquid -its flows not so tightly packed less intermol force than solids

    steam is gas -molecules can spread non uniformly so least intermol force

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