A radioactive nucleus has a half-life of 20 years, starting with 100,000 particles, how many
CHEMISTRY
JAMB 2019
A radioactive nucleus has a half-life of 20 years, starting with 100,000 particles, how many particles will be left exactly at the end of 40 years
- A) 75,000 particles
- B) 35,000 particles
- C) 25,000 particles
- D) 50,000 particles
Correct Answer: C) 25,000 particles
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