Where are the radioactive elements on the periodic table?
Where are the radioactive elements on the periodic table? Keep in mind, all elements can have radioactive isotopes. If enough neutrons are added to an atom, it becomes unstable and decays….Radioactive Elements. Element Most Stable Isotope Half-life of Most Stable Isotope Promethium Pm-145 17.4 years Polonium Po-209 102 years Astatine Read more…