Questions

What type of intermolecular force is found between iodine molecules?

What type of intermolecular force is found between iodine molecules?

van der Waals dispersion forces
Iodine consists of I2 molecules, and the only attractions between the molecules are van der Waals dispersion forces. There are enough electrons in the I2 molecule to make the temporary dipoles creating the dispersion forces strong enough to hold the iodine together as a solid.

What is dipole induced dipole interaction?

A dipole-induced dipole attraction is a weak attraction that results when a polar molecule induces a dipole in an atom or in a non-polar molecule by disturbing the arrangement of electrons in the non-polar species. The dipole–induced-dipole interaction, depends on the presence of a polar molecule.

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What causes dipole interactions between molecules?

Dipole -dipole interactions occur when the partial charges formed within one molecule are attracted to an opposite partial charge in a nearby molecule. Polar molecules align so that the positive end of one molecule interacts with the negative end of another molecule.

What is the interaction when at any given time the electron distribution may be uneven resulting in an instantaneous dipole?

London Dispersion Forces The electron cloud of a helium atom contains two electrons, which can normally be expected to be equally distributed spatially around the nucleus. However, at any given moment the electron distribution may be uneven, resulting in an instantaneous dipole.

Does iodine have dipole-dipole forces?

In iodine all the electrons are shared equally between the two atomic centres and there is no dipole.

What is instantaneous dipole-induced dipole force?

London dispersion forces (LDF, also known as dispersion forces, London forces, instantaneous dipole–induced dipole forces, Fluctuating Induced Dipole Bonds or loosely as van der Waals forces) are a type of force acting between atoms and molecules that are normally electrically symmetric; that is, the electrons are …

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When the induced dipole is due to interaction between an ion and a nonpolar molecule?

An ion-induced dipole attraction is a weak attraction that results when the approach of an ion induces a dipole in an atom or in a nonpolar molecule by disturbing the arrangement of electrons in the nonpolar species.

How might dipole-dipole interactions help many molecules attract each other?

How might dipole-dipole interactions help many molecules attract each other? Dipoles are held together by the attraction between the oppositely charged ends of the separate molecules for each other.

How are dispersion forces different from dipole-dipole interactions?

The main difference between dipole-dipole and London dispersion forces is that dipole-dipole forces occur among molecules with dipole moment whereas London dispersions occur due to instantaneous dipoles that form in atoms or nonpolar molecules.

How are instantaneous dipole induced dipole bonds formed?

This force is sometimes called an induced dipole-induced dipole attraction. Because of the constant motion of the electrons, an atom or molecule can develop a temporary (instantaneous) dipole when its electrons are distributed unsymmetrically about the nucleus.

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When will ion dipole interaction most likely to happen?

Ion-Dipole Forces

  • Most commonly found in solutions. Especially important for solutions of ionic compounds in polar liquids.
  • A positive ion (cation) attracts the partially negative end of a neutral polar molecule.
  • A negative ion (anion) attracts the partially positive end of a neutral polar molecule.