I’ve understood that electrons move in a 3D field outside the nucleus and that they are quite far away from the nucleus itself (in relation to the atom scale).
What would happen if you pushed them out of this moving field of theirs, closer to the nucleus?
Like magnets repelling, they would push back apart. It would take a lot of pushing force to get them closer together.
When things are that tiny, you’re also pushing with other electrons. Nothing is actually making contact because all the electrons repell like magnets. So you can’t take a tiny tweezers or something to push in the electron, because the tweezers would also be made of atoms.