Nuclear Chemistry Question 29
Question: 8 gms of a radioactive substance is reduced to $ 0.5g $ after 1 hour. The $ {t _{1/2}} $ of the radioactive substance is
[DCE 2000]
Options:
A) 15 min
B) 30 min
C) 45 min
D) 10 min
Show Answer
Answer:
Correct Answer: A
Solution:
$ N _{o}=8gms, $ N = 0.5g and t = 1 hr. = 60 min. find $ {t _{1/2}} $ by $ t=\frac{2.303\times {t _{1/2}}}{0.693}\log \frac{N _{o}}{N} $ .
BETA
