A) 7944 years
B) 17190 years
C) 11460 years
D) 13972 years
Correct Answer: C
Solution :
unstable : stable = 1.3 \[4n\to n\] 2 half live \[t=2{{T}_{\frac{1}{2}}}=2\times 5730=11460\operatorname{yrs}.\]You need to login to perform this action.
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