Definition: Antinucleons are a class of particles found in the nucleus of atoms that violate the conservation laws of elementary forces, such as Coulomb's Law. They are composed entirely of anti-charge and thus have no net electric charge or mass, making them analogous to antiparticles. Antinucleons can exist only within certain stable configurations known as spin-parity constraints, which limit their interactions to relatively simple ones in the nucleus.
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