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76.Carbon-14 is a radioactive isotope that occurs naturally. Scientists use carbon-14 to help find the age
of old pieces of wood. This technique is called carbon dating. It uses the idea of half-life. Which of these
describes half-life? (2 pts)
A. the time it takes for half of the undecayed nuclei to decay
B. the time it takes for all of the undecayed nuclei to decay
C. half the time it takes for all of the undecayed nuclei to decay
D. half the time it takes for half of the undecayed nuclei to decay

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GinnyAnswer

Final answer:

Half-life is the time it takes for half of the undecayed nuclei to decay, crucial in carbon dating.


Explanation:

Half-life is defined as the time it takes for half of the undecayed nuclei to decay. In carbon-14 dating, the half-life of carbon-14 is 5730 years. This means that after 5730 years, half of the original carbon-14 in a sample would have decayed to nitrogen-14.


Learn more about Radioactive Dating here:

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