Instantaneous Dipole versus Induced Dipole

(Polar molecules, Non-polar molecules, etc.)

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Amina Durrani 3G
Posts: 52
Joined: Sat Jul 20, 2019 12:16 am

Instantaneous Dipole versus Induced Dipole

Postby Amina Durrani 3G » Sun Nov 17, 2019 10:35 pm

What’s the difference between instantaneous dipole and induced dipole????

AndreiRekesh1I
Posts: 52
Joined: Fri Aug 30, 2019 12:15 am

Re: Instantaneous Dipole versus Induced Dipole

Postby AndreiRekesh1I » Sun Nov 17, 2019 10:41 pm

Induced dipole implies that it's being caused by another atom but instantaneous dipoles can happen just from the arrangement and movement of electrons around the nucleus (more on one side than the other at a certain point in time).

IScarvie 1E
Posts: 66
Joined: Sat Aug 17, 2019 12:16 am

Re: Instantaneous Dipole versus Induced Dipole

Postby IScarvie 1E » Sun Nov 17, 2019 11:03 pm

Instantaneous dipoles are momentary moments where one side of the molecule will be more electronegative than the other as electrons move around the nuclei. When two nonpolar molecules are next to each other, these instantaneous dipoles form induced dipoles, as the temporarily negative side of one is attracted to the temporarily positive side of the other.

Eesha Sohail 1D
Posts: 100
Joined: Sat Aug 17, 2019 12:16 am

Re: Instantaneous Dipole versus Induced Dipole

Postby Eesha Sohail 1D » Sun Nov 17, 2019 11:05 pm

Does that mean that an induced dipole on one atom can be caused by an instantaneous dipole on another? And (just to clarify) the interaction that arises from this would be the dipole moment, a van der Waals interaction?

Jordan Ziegler 2J
Posts: 59
Joined: Sat Aug 17, 2019 12:15 am

Re: Instantaneous Dipole versus Induced Dipole

Postby Jordan Ziegler 2J » Sun Nov 17, 2019 11:07 pm

It is possible for a dipole created by a polar molecule can induce a dipole on a nonpolar molecule.

This kind of molecular interaction is described as dipole-induced dipole.


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