STANDARDChemistry-Nuclear Chemistry
STANDARD Chemistry Radioactive Decay MCQ Question
Type: MCQ-numerical-Medium
The half-life for radioactive decay of C-14 is 5730 years. An archaeological artifact containing wood had only 80% of the C-14 found in a living tree. The age of the sample is:
A
1485 years
B
1845 years
C
530 years
D
4767 years
Correct Answer
Option B
Detailed Explanation
Using the first order kinetics formula for radioactive decay, t = rac{2.303 imes t_{1/2}}{\lambda} \log rac{[R_0]}{[R]}, the age of the sample is calculated to be 1845 years.
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