What is the decay constant of a radioactive element whose half-life is 3 seconds

What is the decay constant of a radioactive element whose half-life is 3 seconds
  • A.
    0.132s-1
  • B.
    0.23s-1
  • C.
    0.347s-1
  • D.
    0.693s-1
  • E.
    0.924s-1
Correct Answer: Option B
Explanation
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