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Tritium is an isotope of hydrogen whose nucleus triton contains 2 neutrons and 1 proton . Free neutrons decay into `p+bar(e) +bar(n).` If one of the neutrons in Triton decays , it would transform into `He^(3)` nucleus. This does not happen. This is becauseA. Triton energy is less than that of a `He^(3)` nucleus.B. the electron created in the beta decay process cannot remain in the nucleus.C. both the neutrons in Triton have to decay simultaneously resulting in a nucleus with `3` protons, which is not a `He^(3)` nucleus.D. Because free neutrons decay due to external perturbations which is absent in a triton nucleus.

Answer» Correct Answer - A


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