Question

$C^{14}$ is:

• A. a natural non-radioactive isotope
• B. an artificial non-radioactive isotope
• C. an artificial radioactive isotope
• D. a natural radioactive isotope

Answer 1

The correct option is D a natural radioactive isotope

$Carbon-14$ or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples.