Dipole Forces

Moderators: Chem_Mod, Chem_Admin

Madison Hurst
Posts: 62
Joined: Fri Sep 28, 2018 12:26 am

Dipole Forces

Postby Madison Hurst » Mon Nov 26, 2018 11:08 am

What is the difference between induced dipole and dipole? How do forces between them differ based on what combination you have?

Rian Montagh 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Re: Dipole Forces

Postby Rian Montagh 2K » Mon Nov 26, 2018 11:21 am

An example of a dipole would be H2O, where the difference in electronegativity causes a negative charge on the O and a positive charge on the H's. An induced dipole would be species that is usually non-polar but could have a high polarizability because it has many electrons. These electrons can be influenced by outside charges and cause one area of the species to have a net positive or negative charge. This is an induced dipole.

Kyleigh Follis 2H
Posts: 64
Joined: Fri Sep 28, 2018 12:28 am
Been upvoted: 1 time

Re: Dipole Forces

Postby Kyleigh Follis 2H » Mon Nov 26, 2018 11:24 am

Dipole-dipole forces result from the difference between electronegativities of the atoms in molecules. It is large enough that the electrons aren't shared equally, and yet small enough that the electrons aren't drawn exclusively to one of the atoms to form positive and negative ions. The bonds in these molecules are said to be polar, because they have positive and negative ends, or poles, and the molecules are often said to have a dipole moment. A dipole-induced dipole attraction is a weak attraction that results when a polar molecule induces a dipole in an atom or in a nonpolar molecule by disturbing the arrangement of electrons in the nonpolar species.

Laura Gong 3H
Posts: 89
Joined: Fri Sep 28, 2018 12:26 am
Been upvoted: 1 time

Re: Dipole Forces

Postby Laura Gong 3H » Mon Nov 26, 2018 12:48 pm

An easy way that usually helps me remember if the intermolecular forces are dipole or induced dipole is that:
Dipole moments occur with polar molecules where induced dipole occur with non polar molecules.

Return to “Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)”

Who is online

Users browsing this forum: Diana A 1G and 1 guest