A) 8.2 hr
B) 5.2 hr
C) 1.2 hr
D) 2.4 hr
Correct Answer: C
Solution :
\[K=\frac{0.693}{{{t}_{1/2}}}\] \[{{t}_{1/2}}=\frac{0.693}{K}=\frac{0.693}{0.58}\]\[\Rightarrow 1.2\,hrs\]
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