Want this question answered?
uranium is probably the source for radioactive isotopes derived from nuclear reactors
235 is used in reactors and explosives as fuel238 is bred in reactors to make plutonium
Plutonium is used in nuclear reactors as a nuclear fuel (as dioxide, carbide or MOX). The isotopes 239Pu and 241Pu are fissionable with thermal neutrons; other isotopes are fissionable only with fast neutrons.
The US with 100 (I am uncertain if this is all reactors or just power reactors though, there are several small reactors operated to make medical isotopes, etc. or for research purposes of various kinds).
plutonium and uranium
reactors to make medical isotopes of other elements
An isotope of uranium is used as a fuel in nuclear reactors
They contain U-235 and U-238
Plutonium is used as nuclear fuel for nuclear reactors. Plutonium isotopes (239, 241) are fissionable with thermal neutrons releasing an extremely great quantity of energy.
Radioactive isotopes are made in reactors, and can be used both for diagnosis and treatment, especially of cancer.
The most important isotopes for nuclear reactors are: - fissile isotopes: U-233, U-235, Pu-239, Pu-241 - fertile isotopes: Th-232, U-238
In fission reactors (by far the most common type), uranium, plutonium and thorium can be used. In fusion reactors (much less common, most are simply prototypes still being tested), hydrogen (or the isotopes deuterium or tritium) or helium can be used.