Not all isotopes are radioactive; the radioactive isotopes are unstable and emit radiations.
No, Barium has both stable and radioactive isotopes. Out of its 25 known isotopes, only 6 of them are considered radioactive. The most stable isotope of Barium is Barium-138, which is not radioactive.
Uranium is considered a radioactive chemical element because uranium (all the isotopes) is unstable and emit nuclear radiations.
Both isotopes and radioactive isotopes are pretty much the same but radioactive isotopes are better because it can be used to make medicine.
Radioactive isotopes are not stable.
Sodium has no radioactive isotopes.
All the uranium isotopes are radioactive.
All radioactive isotopes will disintegrate.
Astatine, a radioactive element found in the halogen group, has at least 20 known isotopes. However, only one of these isotopes, Astatine-210, is considered stable. The other isotopes are unstable and undergo radioactive decay.
All isotopes of francium are radioactive.
radioactive isotopes! :)
Nearly 100% of all strontium found in nature is not radioactive. There are traces of radioactive strontium-90 found in nature, but only traces. Like all elements, strontium has radioactive synthetic isotopes.
Some examples are deuterium and tritium which are radioactive isotopes of hydrogen.