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When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules.

Apex------They form temporary, weak dipole attractions between molecules.

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9y ago
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11y ago

Van der waals force is a form of weak interaction between molecules.

Van der Waals forces are usually considered to include

  • dipole - dipole interactions
  • dipole- induced dipole interactions
  • instantaneous dipole - induced dipole interactions (London dispersion forces)

These are electrostatic in nature, and cause an attraction between molecules

To understand dispersion forces, at any given time there will be more electrons on one side of an atom (or on one side of a bond) that the other. This uneven distribution of electrons creates a small dipole moment. This dipole moment will slightly polarize the atoms and bonds around it creating a temporary source of electrostatic attraction. This electrostatic attraction however is not permanent and is therefore weaker than ones you will find in an ionic bond or with hydrogen bonding.

Hope that helps.

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11y ago

Van der Waals forces are usually considered to include

  • dipole - dipole interactions
  • dipole- induced dipole interactions
  • instantaneous dipole - induced dipole interactions (London dispersion forces)

These are electrostatic in nature, and cause an attraction between molecules

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11y ago

Van der Waals forces are usually considered to include

  • dipole - dipole interactions
  • dipole- induced dipole interactions
  • instantaneous dipole - induced dipole interactions (London dispersion forces)

These are electrostatic in nature, and cause an attraction between molecules.

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12y ago

van der waal forces are very weak. there are a few types of these forces including overlapping bonds ( triogonal planar , tetrahydral bonds etc )

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8y ago

Electrons are shared between the atoms.

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10y ago

hydrogen bonds

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Q: How do van der Wals forces hold molecules together?
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