Do Electron's move around an atom?

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Electrons do not move in orbits around an atom, contrary to the classical Bohr model, which is considered incorrect but still taught for simplicity. Instead, electrons exist as wave functions or probability clouds that describe their potential locations, and these wave functions can be thought of as stationary in the absence of measurement. When measured, the wave function collapses, and the electron appears to "choose" a position, but it does not imply that it moves in a classical sense between measurements. The concept of motion in quantum mechanics is better described in terms of momentum rather than classical velocity, as electrons do not have definite positions or velocities. Overall, the discussion highlights the complexities of quantum mechanics and the limitations of classical analogies in understanding electron behavior.
  • #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.
 
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  • #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.
 

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