London disperson

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Montana James 4G
Posts: 46
Joined: Wed Sep 18, 2019 12:21 am

London disperson

Postby Montana James 4G » Thu Dec 05, 2019 9:17 am

just to clarify, all molecules can have london dispersion forces, right? can someone explain why?

Myka G 1l
Posts: 100
Joined: Fri Aug 30, 2019 12:17 am

Re: London disperson

Postby Myka G 1l » Thu Dec 05, 2019 10:53 am

All molecules have London dispersion forces because all molecules have electrons that are constantly moving around the molecule and can temporarily congregate to one side, creating a temporary partial negative charge. The more electrons present and the larger an atom is, the stronger these forces will be.

Daniel Toscano 1L
Posts: 95
Joined: Tue Nov 13, 2018 12:18 am

Re: London disperson

Postby Daniel Toscano 1L » Thu Dec 05, 2019 11:50 am

To add on, at some point, LDF can be stronger than some other intermolecular forces if the molecules is large

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: London disperson

Postby Angela Patel 2J » Thu Dec 05, 2019 11:56 am

Is London dispersion the same thing as dipole-dipole or van der waals forces? Do we have to mention all of these

Posts: 102
Joined: Fri Aug 09, 2019 12:15 am

Re: London disperson

Postby KnarGeghamyan1B » Thu Dec 05, 2019 12:10 pm

London dispersion is the same as Van der waals but not the same as dipole dipole. Dr.Lavelle said he prefers induced dipole induced dipole when describing London forces but it doesn’t matter all are correct.

Nuoya Jiang
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: London disperson

Postby Nuoya Jiang » Thu Dec 05, 2019 1:00 pm

Yes, because the electrons in all the molecules have a chance to move to a place where a dipole appears.

Megan Jung 3A
Posts: 50
Joined: Thu Jul 11, 2019 12:17 am

Re: London disperson

Postby Megan Jung 3A » Thu Dec 05, 2019 7:58 pm

yes, this is because at some point there will be an induced dipole moment between the molecules creating some intermolecular force even if it is not very strong. This is due to electron clouds moving.

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