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The half-life period for radioactive carbon, is . An ancient sample of wood has only of activity…
The half-life period for radioactive carbon, $^{14}\text{C}$ is $5730\text{ years}$. An ancient sample of wood has only $80\%$ of $^{14}\text{C}$ activity left in comparison to a living plant.
Estimate the age of the ancient wood sample.
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From ISC 2025 Improvement Chemistry Paper 1, question 5.