LDF

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aaronharouni
Posts: 72
Joined: Fri Sep 28, 2018 12:15 am

LDF

Postby aaronharouni » Tue Nov 27, 2018 6:29 pm

Do all molecules have London dispersion forces?

Gary Qiao 1D
Posts: 66
Joined: Fri Sep 28, 2018 12:26 am

Re: LDF

Postby Gary Qiao 1D » Tue Nov 27, 2018 6:35 pm

Yep, all molecules should have LDF!

Pooja Sheladiya 1L
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

Re: LDF

Postby Pooja Sheladiya 1L » Tue Nov 27, 2018 6:46 pm

Why do all molecules have LDFs?

Julia Lee
Posts: 80
Joined: Fri Sep 28, 2018 12:29 am

Re: LDF

Postby Julia Lee » Tue Nov 27, 2018 6:47 pm

Yes, all molecules will have London Dispersion forces because it is due to the random distortion of charge and all molecules have an electron cloud and a positively charged nucleus.

Nawaphan Watanasirisuk 3B
Posts: 58
Joined: Tue Nov 28, 2017 3:03 am

Re: LDF

Postby Nawaphan Watanasirisuk 3B » Tue Nov 27, 2018 8:16 pm

Yes, it is "universal".

mbaker4E
Posts: 69
Joined: Fri Sep 28, 2018 12:26 am

Re: LDF

Postby mbaker4E » Tue Nov 27, 2018 8:29 pm

All molecules have LDFs because an LDF is just a weak, short-range electrostatic force between uncharged molecules, arising from the interaction of transient electric dipole moments. Any molecule, for example a nonpolar covalent molecule with normally no charge, can have its electrons positioned in such a way that it creates a temporary dipole moment. These cause the short-range LDFs to attract molecules to each other, but these forces are very weak and can be easily broken.


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