If the half-life of hydrogen-3 is 11.8 yr,after two half-lives the radioactivity of a sample will be reduced to one-half of the original amount.

Name: If the half-life of hydrogen-3 is 11.8 yr,after two half-lives the radioactivity of a sample will be reduced to one-half of the original amount.
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Quizplus · Accepted Answer

After two half-lives, the radioactivity of a sample will be reduced to one-fourth (1/2 x 1/2 = 1/4) of the original amount, not one-half.

If the Half-Life of Hydrogen-3 Is 11