U-235 has a decay constant of 3.138 × 10¹7 s¹. Calculate the ratio of U-235 remaining after 500 million years.
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- When there are too many or too less neutrons inside a nucleus it becomes unstable. They become stable by removing protons or neutrons through radiation. This process is called radioactive decay.
- This radioactive decay of an unstable nucleus is exponential in nature. It is given by,
Here N0 is the original number of radioactive nuclei present, λ is the decay constant, and t is the time.
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