19 c, 5.3 x 10 (d, 2.7 x 10 19 e. 1.3 x 1019 5. Which statement about radiocarbo

Question

19 c, 5.3 x 10 (d, 2.7 x 10 19 e. 1.3 x 1019 5. Which statement about radiocarbon dating is not true? a. Carbon-14 is continuously produced in the earth's atmosphere. b. Carbon-14 is produced in the atmosphere when 14 N captures a neutron. When plants die, the amount of carbon-14 they contain begins to decline. (d years, a cut tree would contain 25% of the original amount of carbon After 5730 e. A living plant increases the amount of carbon-14 in its tissues over time. *6. Which nuclide would be least lkely to be used as a radiotracer in medicine? 24Na c. 59Fe 32P 235 139

Explanation / Answer

1. U-235 is a radioactive element which cannot be used as radio tracer in medicine due to its radio activity.

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