Which of the following is not a very long- lived, radioactive isotope? A) Rb- 87 B) C- 14 C) K- 40 D) U- 238

Name: Which of the following is not a very long- lived, radioactive isotope? A) Rb- 87 B) C- 14 C) K- 40 D) U- 238
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C-14, or Carbon-14, has a relatively short half-life of about 5,730 years, which is much shorter compared to the other isotopes listed (Rb-87, K-40, U-238) that have half-lives ranging from hundreds of millions to billions of years.

Which of the Following Is not a Very Long- Lived