Do Electron's move around an atom?

  • Context: High School 
  • Thread starter Thread starter simon009988
  • Start date Start date
  • Tags Tags
    Atom
Click For Summary

Discussion Overview

The discussion revolves around the nature of electron movement in atoms, specifically whether electrons move in defined orbits or exist as stationary wave functions. Participants explore concepts from quantum mechanics, including wave functions, probability distributions, and the implications of measurement on electron states.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants argue that electrons do not move in orbits but exist as wave functions or clouds, suggesting a stationary nature.
  • Others assert that while electrons are described by probability wave functions, the concept of them being stationary may be ambiguous.
  • It is noted that energy levels are referred to as orbitals rather than orbits, indicating a lack of distinct position.
  • One participant mentions that in the hydrogen atom, the sum of probability functions produces a spherically symmetric distribution, which could be interpreted as stationary relative to the atom.
  • There is a discussion about the implications of measurement, with some suggesting that upon measurement, the wave function collapses and the electron appears to "choose" a location.
  • Participants explore the idea that electrons may have orbital angular momentum, leading to differing interpretations of what "moving" means in this context.
  • Some argue that the wave function itself is a mathematical abstraction and does not represent physical movement.
  • One participant highlights that the concept of motion in quantum mechanics is complex and cannot be directly compared to classical motion, emphasizing the role of momentum over velocity.
  • There is a mention of the implications of relativity in quantum mechanics, particularly in explaining observed phenomena like the color of gold versus silver.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether electrons can be considered to be moving or stationary. Multiple competing views remain, with some advocating for the wave function perspective and others leaning towards classical interpretations.

Contextual Notes

The discussion highlights the limitations of classical analogies in understanding quantum behavior and the unresolved nature of electron position and momentum in quantum mechanics.

  • #31
simon009988 said:
I was thinking that If Electrons Don't move then how would you explain electricity? Would the whole wavefunction move?

You then have shifted gear. The ORIGINAL question was on electrons bound within an atom. Now, you're asking about the conduction electrons in metals which are now described NOT as electrons bound to an atom, but rather to the whole bulk crystal with Bloch functions. This is now governed by a different description. The Bloch wavefunction now describes such a process if you want to be accurate. However, in many instances, a "free electron gas" description is often good enough. Ohm's law, for example can be derived from such a scenerio.

Do not be confused between the use of QM description in some circumstances with the use of classical description with it is called for under other circumstances. Electrons in particle accelerators are very often described via classical description. However, such usage in the atomic scenario will lead to absurd and self-contradicting results.

Zz.
 
Physics news on Phys.org
  • #32
Electrons moving around the nucleus would make sharing of electrons by atoms impractical as well as creating a "traffic control" problem to keep them from colliding with each other.

Electrons have traditionally been considered to have a negative charge causing them to repell each other and be attracted to the positively charged nucleus. It would be more likely that these charges would result in an equilibrium condition in which the electrons held constant postions relative to each other and to the nucleus unless energy was added or substracted such as when absorbing and emitting radiation. The need to establish an equilibrium based on a fixed number of electrons would explain the need to share electrons with other atoms.

Electrons held in position by their charges could function as if they existed collectively as a wave. They would move toward and away from the nucleus(when emitting or absorbing radiation) in unison like a wave moving in and out.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 36 ·
2
Replies
36
Views
7K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 16 ·
Replies
16
Views
4K
  • · Replies 2 ·
Replies
2
Views
1K