Instantaneous dipole moment

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Marni Kahn 1A
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Joined: Thu Jul 25, 2019 12:17 am
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Instantaneous dipole moment

Postby Marni Kahn 1A » Thu Nov 07, 2019 11:19 am

How long does an instantaneous dipole moment typically last?

chemboi
Posts: 101
Joined: Sat Jul 20, 2019 12:16 am

Re: Instantaneous dipole moment

Postby chemboi » Thu Nov 07, 2019 4:16 pm

In my searching I haven't found much more than a description of the duration as "an instant". Probably an arbitrarily brief moment of time that does not bear relevance for topics covered in this class.

Alison Trinh 1E
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Instantaneous dipole moment

Postby Alison Trinh 1E » Fri Nov 08, 2019 2:30 pm

Can someone clarify what "instantaneous dipole moment" means/refers to?

Ally Huang- 1F
Posts: 103
Joined: Thu Jul 25, 2019 12:16 am

Re: Instantaneous dipole moment

Postby Ally Huang- 1F » Sat Nov 09, 2019 11:08 am

Instantaneous dipoles last for only an instant. Electrons are constantly moving and electron distributions are constantly changing. Therefore, the instantaneous dipoles created by the uneven electron distributions are constantly changing as well.

Alexandra Bartolome 2H
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Joined: Sat Jul 20, 2019 12:17 am

Re: Instantaneous dipole moment

Postby Alexandra Bartolome 2H » Sat Nov 09, 2019 10:20 pm

I don't think there's a specific length of time; it's simply an instant since there's always fluctuations with electron distribution.

Shivam Rana 1D
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am

Re: Instantaneous dipole moment

Postby Shivam Rana 1D » Sat Nov 09, 2019 10:27 pm

Instantaneous dipole moments, like Van der Waals forces, last for fractions of seconds in the sense that the electron densities continually shift causing continual and sporadic interactions in different regions of the two molecules.


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