The Heaviest Known Isotope of Hydrogen Is Called Tritium $^3_1$ H It Decays by Beta Emission, and Has a Half-Life

question 49

Multiple Choice

The heaviest known isotope of hydrogen is called tritium, $^3_1$ H . It decays by beta emission, and has a half-life of 12.3 years. What fraction of a tritium sample will remain after 5.20 years

• A) 0.0210
• B) 0.746
• C) 3.41
• D) 0.254
• E) 0.423

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