Classical hydrogen "molecule" - can it be stable?

Click For Summary

Discussion Overview

The discussion explores the possibility of a stable or metastable configuration of a classical hydrogen "molecule," consisting of two positive charges and two negative charges. Participants consider various arrangements and the implications of Coulomb energy in both two-dimensional and three-dimensional configurations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes a configuration where electrons move in an anti-coordinated figure-of-eight pattern to potentially eliminate radiation and achieve stability.
  • Another participant suggests placing the charges at the corners of a square, calculating the negative Coulomb energy, and speculating on the possibility of packing them like sodium chloride crystals.
  • A different participant expresses curiosity about the necessity of electron orbits for achieving a time-averaged zero force, noting the interest in the stability of a static system.
  • Concerns are raised about the stability of configurations as the distance between charges decreases, with one participant arguing that reducing the side length of the square leads to a collapse of the system.
  • Another participant asserts that classical physics does not allow for a stable configuration of a hydrogen atom with particles apart.

Areas of Agreement / Disagreement

Participants express differing views on the stability of classical configurations of charges, with some exploring the potential for stability and others highlighting the challenges and limitations inherent in such systems. The discussion remains unresolved regarding the feasibility of a stable classical hydrogen molecule.

Contextual Notes

Participants note that the assumptions regarding the arrangement and behavior of charges may significantly impact the conclusions drawn, particularly concerning Coulomb energy and the dynamics of the system.

Swamp Thing
Insights Author
Messages
1,048
Reaction score
799
Is it possible to have a configuration of two classical positive charges and two classical negative charges that will remain fairly stable (or at least metastable), if started off in some well-chosen initial condition?

For example, we might want to eliminate radiation by having the electrons move in an anti-coordinated figure-of-eight pattern so that their radiation fields cancel out at any distant point. Would that help to achieve a configuration that will not explode or implode right away?
 
Physics news on Phys.org
Hi.
Hydrogen molecule consists of two electrons and two protons. Say we put them on the corners of square whose length of the side is a. Coulomb energy (-1-1-1-1+1/√ 2+ 1/√ 2)e^2/a is negative so we may have a chance to pack many of them like sodium chloride crystals.

In 3D case of regular tetrahedron, Coulomb energy (-1-1-1-1+1+1)e^2/a is negative also.
 
Last edited:
I was somehow assuming that you need the electrons to be orbiting in order to get a time-averaged zero force.

It's pretty interesting that a static system could be stable.
 
The Coulomb energy may be negative, but if you make the side of the square a/2 the energy will be twice as negative, a/4 four times, and so on - they will collapse onto each other, just like a static proton and electron at distance a.
 
Hi.
Yea, as hydrogen atom made of positive charge proton and negative charge electron can not exist with particles apart in classical physics.
 

Similar threads

  • · Replies 11 ·
Replies
11
Views
5K
  • · Replies 9 ·
Replies
9
Views
1K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 21 ·
Replies
21
Views
6K
  • · Replies 21 ·
Replies
21
Views
4K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 7 ·
Replies
7
Views
6K
  • · Replies 34 ·
2
Replies
34
Views
11K
  • · Replies 62 ·
3
Replies
62
Views
12K
  • · Replies 19 ·
Replies
19
Views
6K