London Forces in a body that's conducting electricity

In summary, the strength of London Dispersion Forces in a compound is determined by the number of electrons in its valence shell. However, if the compound is conducting electricity, it will have a smaller number of valence electrons, potentially resulting in weaker London Forces. This could lead to a decrease in the overall sum of intermolecular forces and lower melting and boiling points. The question remains whether it would take less energy to break these forces in a compound with an electric current passing through it. This topic was brought up in a chemistry class and posted in a physics forum, though it may have been better suited for a chemistry forum. Any opinions on this matter are welcome.
  • #1
sermatt
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We know that the more electrons there are in the valence shell of an atom, the stronger the London Dispersion Forces are, and therefore, the compound will have a higher melting and boiling points.

But now suppose electricity is being conducted through the object. Because it will have a smaller number of valence electrons (those are the charged particles that flow, creating electric current), would it be safe to assume that the London Forces would get weaker, and therefore, the overall sum of intermolecular forces would be less than the original, resulting in lower melting and boiling points?

In other words, would it require less energy to break the intermolecular forces on an object that has an current passing through it?Though this up in chemistry class, and posting it in physics forum
Pardon my grammar, just woke up

EDIT: on the second thought, maybe I should have moved this to Chemistry forum. Sorry.
 
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  • #2
Would anyone like to share their opinion on this?
 
  • #3


I can say that it is not safe to assume that the London Forces would get weaker in a body conducting electricity. While it is true that the number of valence electrons may decrease due to the flow of electric current, the overall strength of the London Forces is also influenced by other factors such as the size and shape of the molecule.

Additionally, the presence of an electric current does not necessarily mean that the intermolecular forces will decrease. In fact, in some cases, the flow of electrons can actually strengthen the intermolecular forces, leading to higher melting and boiling points.

It is important to remember that the strength of intermolecular forces is a complex interplay of various factors and cannot be solely determined by the number of valence electrons or the presence of an electric current. Therefore, it would not be accurate to assume that the overall sum of intermolecular forces would be less and the melting and boiling points would be lower in a body conducting electricity.

I would suggest discussing this topic further in a chemistry forum, as it involves a deeper understanding of intermolecular forces and their behavior in different scenarios.
 

Related to London Forces in a body that's conducting electricity

What is a London Force?

A London Force, also known as a dispersion force or induced dipole-induced dipole interaction, is a type of intermolecular force that occurs between all atoms and molecules. It is caused by temporary shifts in electron density, resulting in a temporary dipole moment.

How do London Forces affect a body that's conducting electricity?

In a body that's conducting electricity, London Forces can affect the movement of electrons. The temporary dipoles created by London Forces can cause a slight separation of charge in the molecule, making it more susceptible to attracting or repelling charged particles.

Can London Forces impact the conductivity of a material?

Yes, London Forces can impact the conductivity of a material. As mentioned before, these forces can affect the movement of electrons, which is essential for conducting electricity. Therefore, the strength of London Forces can affect the overall conductivity of a material.

Are London Forces the only type of intermolecular force that affects conductivity in a material?

No, there are other types of intermolecular forces that can also impact conductivity in a material, such as dipole-dipole interactions and hydrogen bonding. However, London Forces are often the dominant force in non-polar molecules, which are typically poor conductors of electricity.

Can London Forces be manipulated to improve the conductivity of a material?

Yes, London Forces can be manipulated to some extent to improve the conductivity of a material. For example, by increasing the surface area of a material, the number of London Forces between molecules can increase, leading to better conductivity. Additionally, the introduction of impurities or dopants can also affect the strength of London Forces and improve conductivity.

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