Question

Most radioactive isotope in the planet?

Answer 1

Polonium 210 is the most radioactive isotope in the planet.

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Answer 2

Of these, 5H is the most stable, and the least stable isotope is 7H . ProtiumProtium, the most common isotope of hydrogen, consists of one proton and one electron. Unique among all stable isotopes, it has no neutrons.
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