Nuclear Chemistry Question 22
Question: How many alpha particles are emitted per second by 1 microgram of radium
Options:
A) $ 3.62\times 10^{4}/\sec $
B) $ 0.362\times 10^{4}/\sec $
C) $ 362\times 10^{4}/\sec $
D) $ 36.2\times 10^{4}/\sec $
Show Answer
Answer:
Correct Answer: A
Solution:
$ 1C $ = Activity of $ 1g $ of $ Ra^{226}=3.7\times 10^{10}dps $ Activity of $ 1\mu g $ of $ Ra^{226}=3.7\times 10^{4}dps $ So, the no. of $ \alpha $ -particles are emitted per second by $ 1\mu g $ of $ Ra $ is $ 3.7\times 10^{4}dps\approx 3.62\times 10^{4}/\sec $
BETA
