LDF

[aaronharouni]

Do all molecules have London dispersion forces?

[Gary Qiao 1D]

Yep, all molecules should have LDF!

[Pooja Sheladiya 1L]

Why do all molecules have LDFs?

[Julia Lee]

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]

Yes, it is "universal".

[mbaker4E]

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.