Noun
atomic nucleus (plural atomic nuclei)
(physics) A nucleus of an atom; consisting of protons and neutrons, surrounded by an electron cloud.
A floating-point system can be used to represent, with a fixed number of digits, numbers of different orders of magnitude : e.g. the distance between galaxies or the diameter of an atomic nucleus can be expressed with the same unit of length. Source: Internet
A stronger attractive force was postulated to explain how the atomic nucleus was bound despite the protons' mutual electromagnetic repulsion. Source: Internet
E.g., section 9.3 in citation That process is the reverse of "annihilation to one photon" allowed in the electric field of an atomic nucleus. Source: Internet
A positron (e + )—an antimatter electron—is emitted along with an electron neutrino The number of protons and neutrons in the atomic nucleus can be modified, although this can require very high energies because of the strong force. Source: Internet
A more accurate analogy might be that of a large and often oddly shaped "atmosphere" (the electron), distributed around a relatively tiny planet (the atomic nucleus). Source: Internet
Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus. Source: Internet