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Chemical Kinetics and Nuclear Chemistry

Section: Chemistry

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Question : 2

Total: 33

A sample initially contains only U−238 isotope of uranium. With time, some of the U−238 radioactively decays into Pb−206 while the rest of it remains undisintegrated.
When the age of the sample is P×108 years, the ratio of mass of Pb−206 to that of U−238 in the sample is found to be 7. The value of P is ______ .
[Given : Half-life of U−238 is 4.5×109 years; loge2=0.693 ]

[JEE Adv 2024 P2]

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