which isotope of hydrogen is used as a tracer in organic compound.

which isotope of hydrogen is used as a tracer in organic compound.
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Answer :

Ans: The Hydrogen has three isotopes viz H.D and T. Due to difference in masses, the rate constant of these isotopes with the same substrate are different. In other words Both D and T show isotope effect, but since T is not only radioactive in nature but is also least abundant hydrogen isotope, therefore D is used as tracer to study the mechanism of organic reaction.
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