Explain what ion-ion, ion-dipole, etc.

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aphung1E
Posts: 101
Joined: Sat Aug 24, 2019 12:15 am

Explain what ion-ion, ion-dipole, etc.

Postby aphung1E » Thu Nov 14, 2019 8:46 pm

Can someone explain what are ion-ion, ion-dipole, dipole-dipole, dipole-induced dipole, and induced-induced dipole is?

Qilan Li 4I
Posts: 54
Joined: Mon Jun 17, 2019 7:23 am

Re: Explain what ion-ion, ion-dipole, etc.

Postby Qilan Li 4I » Thu Nov 14, 2019 11:19 pm

Ion-ion interactions are an attractive force between ions with opposite charges.

An ion-dipole interaction is the result of an electrostatic interaction between a charged ion and a neutral molecule that has a dipole (temporarily charged dipole). For example, a positive ion (cation) attracting the partially negative end of a neutral polar molecule or a negative ion (anion) attracting the partially positive end of a neutral polar molecule.

Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule. These positive and negative ends are partial charge formed within a molecule because of the uneven distribution of electrons.

A dipole-induced dipole attraction is an attraction that results when a polar molecule induces a dipole in an atom or in a nonpolar molecule by changing the arrangement of electrons in the nonpolar atom/molecule.

The induced dipole-induced dipole is a temporary attractive force that results when the electrons in two adjacent atoms form temporary dipoles. An atom or molecule might form a temporary dipole (as a result of uneven distribution of electrons) and a second atom/molecule might change its form which leads to an attraction between the two.


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