Carbon-13 Edit History Talk0 224pages on this wiki Carbon-13 or 13C is a stable isotope of Carbon, and is a product of Carbon-14. It does not decay, because it is stable, and not radioactive Read more Carbon-14, or radiocarbon, is a carbon atom which has 8 neutrons and 6 protons. Having 8... Carbon-14 Uranium-238, also known as Depleted Uranium and 238U, is the most common uranium isotope that is... Uranium-238 Iodine-131 or 131I, also commonly known as radioiodine is a radioactive form of Iodine, which is... Iodine-131 Categories: Isotopes Add category Cancel Save