No, radioactive isotopes are not good for any diet. Radioactive isotopes are radioactive, which means they have unstable atomic nuclei. These unstable nuclei will, sooner or later, decay, and they will emit some kind(s) of radiation in the process. Radiation can damage biological material, and that's not good for any living thing. We generally are subject to a bit of natural radiation all the time. It's the natural background radiation. But we work to avoid any "extra" exposure because it can be hazardous to our health.
We do use radioactive isotopes in nuclear medicine and associated procedures. But in these cases, the benefit is worth any small risk. Exposure to radiation in medicine is carefully calculated and monitored by the professionals who work with it.
Not all isotopes are radioactive; the radioactive isotopes are unstable and emit radiations.
Both isotopes and radioactive isotopes are pretty much the same but radioactive isotopes are better because it can be used to make medicine.
Sodium has no radioactive isotopes.
Radioactive isotopes are not stable.
All the uranium isotopes are radioactive.
All radioactive isotopes will disintegrate.
All isotopes of francium are radioactive.
radioactive isotopes! :)
Some examples are deuterium and tritium which are radioactive isotopes of hydrogen.
There are no radioactive isotopes of boron that are ordinarily found in nature. All elements have synthetic radioactive isotopes, however.
No radioactive isotopes of neon are ordinarily found in nature. All elements have radioactive synthetic isotopes, however.
Not all of the transition elements are radioactive. Many of them are, and some of them have common radioactive isotopes, but some of them have no naturally occurring radioactive isotopes. Please note that all elements have synthetic radioactive isotopes, at least.