izotóprakciós
Isotoprakciós is a term that appears to be a misspelling or a non-standard transliteration, likely related to the concept of isotopes. In chemistry and physics, isotopes are variants of a particular chemical element that differ in neutron number, and therefore in nucleon number. All isotopes of a given element have the same number of protons in each atom. The number of protons determines the atomic number and thus the element. For example, hydrogen has three common isotopes: protium (1 proton, 0 neutrons), deuterium (1 proton, 1 neutron), and tritium (1 proton, 2 neutrons).
The prefix "izotóp" in many languages, including Hungarian, directly translates to "isotope." The suffix "rakciós" is