RM
Atom, artwork
Atomic structure. Conceptual computer artwork of nine electrons orbiting a central nucleus. Other particles are seen around the atom. This is a classical schematic Bohr model of an atom. In quantum physics it is thought that the electrons do not actually follow a defined orbit, but instead inhabit areas of probability around the nucleus. Nuclei without any orbiting atoms are at bottom right. Lone electrons are at top. At left are protons, positively charged subatomic particles that are made up of three quarks held together by gluons.
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