Instantaneous dipole moment

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Marni Kahn 3E
Posts: 51
Joined: Thu Jul 25, 2019 12:17 am
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Instantaneous dipole moment

Postby Marni Kahn 3E » Thu Nov 07, 2019 11:19 am

How long does an instantaneous dipole moment typically last?

chemboi
Posts: 52
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 1A
Posts: 53
Joined: Thu Jul 25, 2019 12:16 am

Re: Instantaneous dipole moment

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

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

Ally Huang- 1E
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

Re: Instantaneous dipole moment

Postby Ally Huang- 1E » 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 4D
Posts: 51
Joined: Sat Jul 20, 2019 12:17 am

Re: Instantaneous dipole moment

Postby Alexandra Bartolome 4D » 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 1L
Posts: 56
Joined: Fri Aug 09, 2019 12:16 am

Re: Instantaneous dipole moment

Postby Shivam Rana 1L » 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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