A radioactive element has a decay constant of 0.077s-1. Calculate its half-life

A radioactive element has a decay constant of 0.077s-1. Calculate its half-life
  • A.
    13.0s
  • B.
    9.0s
  • C.
    5.1s
  • D.
    0.5s
Correct Answer: Option B
Explanation

(t_{frac{1}{2}} = frac{0.693}{lambda} = frac{0.693}{0.077} = 9s)

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