the lightest radioactive isotope in the periodic table is
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Answer:
Technetium
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Answer:
The lightest radioactive element is tritium, 3H, an isotope of hydrogen. It's hydrogen with its one proton, but it has two neutrons hanging around in its nucleus as well. Tritium, 3H, is created naturally by cosmic rays. It has a half-life of 12.32 years, at which time it undergoes decay to 3He. It is also the product of neutron activation or neutron capture in nuclear reactors. Wikipedia has an article with more information, and a link is provided.
The lightest radioactive element is the hydrogen isotope "tritium". All hydrogen atoms have one proton. A tiny percentage of hydrogen atoms are "heavy hydrogen", called deuterium, which has one proton and one neutron.
Tritium is "extra-heavy hydrogen", having one one proton and TWO neutrons. Tritium has a fairly short half-life and decays into helium-3.
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