In an atom, the electrons are

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Electrons orbit the nucleus in energy shells, or orbitals, that correspond to different energy levels. They are not housed within the nucleus, as the nucleus is composed of protons and neutrons. They are also not positively charged, as they carry a negative charge. While they are in motion around the nucleus, they do not "move through" the nucleus. Finally, electrons are never truly at rest due to their wave-like nature, but their motion and energy levels can be described by the principles of quantum mechanics.

In an Atom, the Electrons Are