A radio isotope ′X′ with a half-life 1.4×109 years decays to ′Y – InterviewSolution

1.	A radio isotope ′X′ with a half-life 1.4×109 years decays to ′Y′ which is stable. A sample of the rock from a cave was found to contain ′X′ and ′Y′ in the ratio 1:7. The age of the rock is
Answer» A radio isotope $^{'} X^{'}$ with a half-life $1.4 \times 10^{9}$ years decays to $^{'} Y^{'}$ which is stable. A sample of the rock from a cave was found to contain $^{'} X^{'}$ and $^{'} Y^{'}$ in the ratio $1 : 7.$ The age of the rock is

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