Carbon-14 Is a Radioactive Isotope Which Decays with a Half-Life

question 15

Multiple Choice

Carbon-14 is a radioactive isotope which decays with a half-life of 5730 years. What is the first-order rate constant for its decay, in units of years^-1?

• A) 5.25 × 10^-5 years^-1
• B) 1.21 × 10^-4 years^-1
• C) 1.75 × 10^-4 years^-1
• D) 3.49 × 10^-4 years^-1
• E) 3.97 × 10³ years^-1

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