A) 2900 years
B) 5800 years
C) 11600 years
D) 23200 years
Correct Answer: C
Solution :
\[25g\xrightarrow[{}]{{{T}_{1/2}}}12.5g\xrightarrow[{}]{{{T}_{1/2}}}6.25g\]. After two half lives the sample will reduce at 6.25 g. \[\Rightarrow \]So time taken\[t=\frac{2\pi }{2}\] \[=2\times 5800=11600%\]You need to login to perform this action.
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