Back Eksotiese atoom Afrikaans ذرة شاذة Arabic Àtom exòtic Catalan Exotický atom Czech Exotische Atome German Εξωτικό άτομο Greek Exotic atom English Átomo exótico Spanish اتم اگزاتیک Persian Atome exotique French
An exotic atom is an atom that has a particle replaced by a particle of the same charge. For example, Positronium, an exotic atom, contains an electron and a positron. The positron (which is the antiparticle of the electron) replaces a proton which would normally be found in that atom. Most exotic atoms are hard to discover, because they decay very quickly. Positronium on average has a half-life (how long until half of the object is gone via decay) of 0.125 nanoseconds. There are a few types of exotic atom.