Nuclear Chemistry Question 9
The half-life of a radioactive sample is 9 hours. The radioactive decay obeys first order kinetics. The time required for the original sample to reduce to 0.2 gm is
[AMU (Engg.) 2002]
Options:
A) 15.6 hours
B) 156 hours
C) 20.9 hours
D) 2.09 hours
Show Answer
Answer:
Correct Answer: C
Solution:
$ \frac{0.693}{9}=\frac{2.303}{t}\log \frac{1}{1-0.2} $
BETA
