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How is the VSEPR theory related to the Pauli Exclusion Principle?

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Someone asked in “How is the VSEPR theory related to the Pauli Exclusion Principle?” and this is the anwsered i gave:

(About the VSEPR, you can read in Wikipedia that “Valence shell electron pair repulsion (VSEPR) theory is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms. It is also named the Gillespie-Nyholm theory after its two main developers, Ronald Gillespie and Ronald Nyholm.

The premise of VSEPR is that the valence electron pairs surrounding an atom tend to repel each other and will, therefore, adopt an arrangement that minimizes this repulsion, thus determining the molecule’s geometry. Gillespie has emphasized that the electron-electron repulsion due to the Pauli exclusion principle is more important in determining molecular geometry than the electrostatic repulsion”).

“My answer is not going to be very useful because the model I’m going to use is an unconventional hypothesis based on intersecting fields that expand and contract, but maybe it could be inspirational to you in some way.

Two intersecting fields will create 4 new subfields in and by their intersection. The behaviour and symmetry of those subfields will be different depending on if those two intersecting fields vary with equal or opposite phase.

(I mentioned two intersecting fields as the simplest system, but a molecule could have a central field intersecting with four subfields, by example, one for each cardinal point, so the subfields would be at least 16 subfields.)

The 4 subfields would be the subatomic particles of the atomic nucleus. In this sense, the electromagnetic atom would be a binary system with a shared nucleus.

Those 4 subfields would be ruled by the Pauli Exclusion Principle when the two intersecting fields vary with opposite phase: when one field expands, the another one contracts.

As you can see in the below picture, the electron-subfield would be the subfield moving towards the left side when the left intersecting field contracts (while the right handed intersecting field expands). At the next moment, when the right intersecting field expands, that electron-subfield will be moving towards the right side becoming a positron. Electron and positron are the same subfield moving in a pendular way (that’s in this view why they are Majorana antiparticles).

Because of the Pauli Exclusion principle, electron and positron cannot exist at the same time. So when the electron exists at the left side, it’s told that the positron exists as a virtual particle (it actually does not exist now but it now exists in a potential way that will become effective at the next moment).

If we create a molecule intersecting two expanding – left and right – fields with a central contracting field, (or two contracting – left and right – fields with a central expanding field) the consequence will be that when the left and right fields expands, at the left side of the center of symmetry of the system there will be a positron-subfield moving towards right (in red on the below picture), and at the right side there will be an electron-subfield moving towards the left side (in green on the below picture).

I’ve drawn this picture to show it (note that a similar opposite confrontation would be happening with the proton-subfield and the neutron-subfield).

At the next moment, when the left and right fields contract and the central one expands, the displacements will be the opposite.

So, if those electron and positron subfields existing at the same time and moving towards the same center of symmetry of the system collided, a spontaneous repulsion would take place.

I think it’s not possible the collision of two electron-subfields, actually because of the Pauli exclusion principle, and that would be a mistake of the VSEPR theory, to me the physical repulsion only could take place between electrons and positrons when it comes to molecular fermions.

To me, the Pauli Exclussion principle does not mean that two electrons cannot be in the same place at the same time, which is an evident thing (and also would apply to bosons as two photons cannot exist at the same time in the same place. The Pauli Exclusion principle in my opinion means that at the both sides of the center of symmetry of the system, a particle and its antiparticle do not exist at the same time when it comes to fermions.

Coming back to the atomic system , when the intersecting fields vary with the same phase (they both contract or expand at the same time), the displacement of the subfields would not take place towards left and right but upward and downward. Here, at the left and right sides there are two mirror symmetric fields (they are Dirac antimatter) and that’s why it’s told the system is not ruled by the Pauli Exclusion Principle. So, that system would be formed by “bosons”.

I added below a picture of what I think could be a carbon atom being observed from above”.

Kind regards


Written by also65

abril 17, 2018 at 8:23 pm

Publicado en Uncategorized

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