Nuclear Chemistry Question 5
Question: A radioactive sample has a half-life of 1500 years.A sealed tube containing $ 1gm $ of the sample will contain after 3000 years
[MNR 1994; UPSEAT 2001, 02]
Options:
A) $ 1gm $ of the sample
B) $ 0.5gm $ of the sample
C) $ 0.25gm $ of the sample
D) $ 0.00gm $ of the sample
Show Answer
Answer:
Correct Answer: C
Solution:
$ T={t _{1/2}}\times n, $ \ $ 3000=1500\times n $ \n = 2 \ Amount left $ =\frac{1}{2^{2}}=\frac{1}{4}=0.25g $ .
BETA
