radioactive element X with a half life period of 2 hours decays giving a stable element Y. After a time t the ratio of X to Y atoms is 1 : 7. Then t is
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The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio 1:7 in a sample of a given rock. The age of the rock is estimated to be:
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Answer:
6 hours
Explanation:
SOLUTION:
x/y = 1/7
Total Parts = 1 + 7 = 8
Total 8 parts = 23
2^3 shows that 3 half lives
its already given that half life period of 2 hours
Hence, t = 3 × 2 = 6 hours
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