A) 23 days
B) 230 days
C) 0.23 days
D) 2.3 days
Correct Answer: D
Solution :
\[{{t}_{1/2}}=\frac{0.693}{\lambda }\] \[=\frac{0.693}{2.09\times {{10}^{-4}}}\] \[=3315.7\,\min \] \[=\frac{3315.7}{60\times 24}=2.3\,days\]
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