A) \[1250\,yr\]
B) \[1620\,yr\]
C) \[200\,yr\]
D) \[60\,yr\]
Correct Answer: B
Solution :
Half-life \[{{T}_{1/2}}=\frac{0.693}{\lambda }\] \[=\frac{0.693}{4.28\times {{10}^{-4}}}\approx 1620yr\]You need to login to perform this action.
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