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Iron-55
Iron-55 (55Fe) is a radioactive isotope of iron with a nucleus containing 26 protons and 29 neutrons. It decays by electron capture to 55Mn and this process ...
Bismuth-207
Although bismuth-209 is now known to be radioactive, it has classically been considered to be a stable isotope because it has a half-life of approximately 2....
Caesium-137
Caesium-137 is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fis...