Atoms And Nuclei Question 399
Question: A radioactive isotope has a half-life of 200 years. How long will it take the activity to reduce to 1% of its original value?
Options:
A) 330 years
B) 460 years
C) 660 years
D) 920 years
Show Answer
Answer:
Correct Answer: C
Solution:
so, for 1% decay
years If and B are emitted simultaneously.