London Dispersion

[Annabella_Amato_1I]

Are london dispersion forces always happening between molecules? Is this even while other forces are occurring?

[Brianna Martilla 1C]

Yes, london dispersion forces are always present, but are very weak until they add up when many molecules are present.

[chinmayeec 2H]

London dispersion forces are always present between all molecules, and they are the only force that is present in nonpolar molecules. They become stronger in rod-shaped molecules and molecules with atoms that have high polarizability. They are also present when other interactions are occurring. For example, water experiences hydrogen bonding but also has London dispersion forces.


Hope that helps!

[Giselle Granda 3F]

London dispersion forces happen in all molecules whether nonpolar or polar, and nonpolar molecules only have this force going on. Therefore, in any question that asks, just know that as a rule of thumb that all of the molecules that they ask about will automatically have LDF present, and depending on their polarity, there may be other forces present as well!

[Andreas Krumbein 1L]

Yes, LDFs happen due to the electrons being momentarily being in a single area, causing the molecule to be momentarily polar. This happens relatively often due to the fact that an electron's position is a matter of probability (based on the uncertainty principle). So every molecule experiences LDFs at all times, and even polar molecules like water and ionic compounds experience LDFs to varying degrees.

[Jonathan Banh 1G]

London dispersion forces (LDFs) are always occurring between molecules. They rely upon the electron's typical behavior of randomness and thus are momentary differences in charge throughout the molecule that are the result of arbitrary movement. Electrons are always randomly moving, so this is why LDFs are always present, even in the presence of other forces.

[Jason_Glass_2L]

Yeah, LDF happens between all molecules, but the degree of the strengths may be different depending on the size of the molecule. Larger Molecules will have larger LDF and molecules with more electrons will have stronger LDFs.

[Sandy Lin 1L]

Yes LDF occurs in all molecules because the electron clouds of atoms are always changing when atoms interact.

[Griffin G]

Yes, london dispersion forces always exist when molecules are interacting.

[Sam Wentzel 1F 14B]

LDFs are always occurring, as electrons in an atom are never stationary. The movement of electrons creates regions of differing electron density, resulting in a higher electron density field of partial negativity, and a lower electron density field of partial positivity. These partial charges induce changes in the electron densities of surrounding molecules, causing e- e- repulsion, which in turn creates a corresponding region of partial positive, and negative charge in the nearby molecule, resulting in the weak force of attraction known as LDFs.

[t_rasul2I]

London dispersion forces are always present and in every molecule including non-polar forces. There are more dispersion forces in bigger molecules because there is more surface area essentially. Therefore, bigger molecules have higher boiling points.

[Anh Trinh 1J]

London Dispersion Forces are present in all molecules. The strength of it is dependent on the atoms in the molecule. Larger and heavier atoms have more electrons, and thus stronger London forces.

[Carolina Gomez 2G]

Yes, London forces occur between all molecules, they also occur while other interactions are taking place.

[Hasan Mirza 3F]

London forces are always occurring but they aren't as significant on smaller molecules, especially when compared to other intermolecular forces.

[Taha 2D]

They are always present as intermolecular forces but they arent significant unless they build up.

[Anthony_Sandoval_1D]

To answer your question, Yes. London dispersion is occurring in all molecule interactions.

[Neel Sharma 3F]

London dispersion forces or induced-dipole induced-dipole intermolecular bonds are always occurring. As the only truly non-polar bond is between two same elements, every bond has an unequal sharing of electrons based on each element's respective electronegativity. As a result, instantaneous dipoles between the positive and negative dipoles on neighboring molecules will form and weakly bond molecules together. These bonds are called London dispersion forces. They increase with greater surface area and with larger molecules. Hope this helps!

[Micaela Estavillo]

Yes London dipersion is alwasys present!!

[Hailey Qasawadish 2J]

London dispersion forces are present in all molecules as an intermolecular force!

[Danielle DIS2L]

Yes! LDF are always present for all molecules

[Queena Chu 3E]

Yes, they are always present even with other forces present!

[Isabella Cortes 2H]

london dispersion forces are always present in molecules, including when there are other forces occuring

[LovepreetSran_3H]

London Dispersion Forces are always present.

[Thomas Gimeno]

While london dispersion forces always occur in groups of molecules, each individual molecule is not always participating in LDFs. Also LDFs can occur in one part of a molecule and not another part, all that is necessary is a sight where a difference in electron density can create a partial positive and negative charge. Even If a molecule is participating in normal dipole-dipole interactions the electrons have a chance to randomly rearrange into a different dipole which I think would then be considered a LDF. This is why polar molecules like water participate in both dipole-dipole forces and LDFs.

[Susanna Givan 2B]

what determines how strong london dispersion forces are again?

[Brian Nguyen 2I]

Yes, London dispersion forces are always present. However, these forces are only significantly strong the larger the mass of the molecule.

[Gabe_Ek 1G]

Yes this is true, London dispersion forces are always present within molecules. These are usually not so strong depending if the molecular mass is relatively large or not.

[Kelly Ha 1K]

what determines how strong london dispersion forces are again?

Generally, larger and heavier atoms have stronger dispersion forces while smaller and lighter atoms have weaker dispersion forces, which is due to the differing levels of polarizability.

[Jaden Kwon 3C]

London dispersion forces are always present between molecules as the distribution of electrons is random within atoms which can create moments of instantaneous dipoles and induced dipoles. This can occur even with other intermolecular forces present.

[Mackenzie Van Val 3E]

what determines how strong london dispersion forces are again?

Large, heavy atoms have stronger London Dispersion forces than smaller, lighter atoms because they are more polarizable and have more electrons. On a related note, the larger the surface area of an atom, the stronger its London Dispersion Forces will be.

[Jeremy Wei 2C]

Hi London Dispersion forces exist in all molecules! However, molecules bigger in size will have stronger London dispersion forces compared to a smaller molecule.

[Lauren Strickland 1B]

Yes they are always present in molecules.

[Bai Rong Lin 2K]

London dispersion forces are always present between all molecules, and they are the only force that is present in nonpolar molecules. They become stronger in rod-shaped molecules and molecules with atoms that have high polarizability. They are also present when other interactions are occurring. For example, water experiences hydrogen bonding but also has London dispersion forces.


Hope that helps!

This is actually very helpful! It helps explain a lot of the question I had on the London dispersion force

[DPatel_2L]

Yes, they are always present.