Rather they were the products of the decay of radioactive isotopes of iodine, which in turn were formed from radioactive tellurium and so forth, according to a well-known sequence of nuclear reactions that gives rise to stable xenon.

• 它们其实是碘同位素放射衰变的产物，而碘是由放射性碲产生，依此类推，经由人们所熟知的一系列核反应而产生稳定的氙。