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A radioactive isotope X with half-life o...

A radioactive isotope X with half-life of `693xx10^(9)` years decay to Y which is stable. A sample of rock from of the moon was found to contain both the elements X Y in the mole ratio `1:7` . What is the age of the rock ?

A

`2.079xx10^(12)` years

B

`1.94xx10^(10)` years

C

`1.33xx10^(9)` years

D

`10^(10)` years

Text Solution

Verified by Experts

The correct Answer is:
A
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