Atomic physics

Atomic physics is the branch of modern physics that studies the properties of atoms as isolated systems, including electrons and atomic nuclei, mainly concerning the arrangement of electrons around the nucleus and the processes by which these arrangements change.

This is a field of physics studied at the beginning of XX century with the provision of various atomic models up to the current model considered more likely or with internal nucleus and external electrons of orbital type.

This field clearly involves neutral atoms as well as ions and, unless otherwise specified, it also includes the description and evolution in time of the atomic model. The term atomic physics is often mistakenly associated with nuclear energy and nuclear bombs (or atomic bombs, in fact), however this area of interest of the sub-branch of nuclear physics that focuses instead only on the atomic nucleus and the respective nuclear forces and nuclear reactions.

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