A) 6.2 hr
B) 2.3 hr
C) 1.2 hr
D) 4.6 hr
Correct Answer: C
Solution :
Here, \[\lambda =0.58\,h{{r}^{-1}},{{t}_{1/2}}=?\] \[{{t}_{1/2}}=\frac{0.693}{\lambda }\] \[=\frac{0.693}{0.58}\] \[=1.2\,hr\] Hence, the correct option is (c).
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