Question

Where are Electrons placed in an atom are they stationary

Answer 1

Answer:

Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are foundoutside the nucleus.

In fact, physicists call stable atomicelectron states "stationary states" because the magnitude squared of the wavefunction is constant in time. If you consider the raw wavefunction to be the truly physical entity, then you have to say that an electron in an atom experiences motion in the form of a vibration.