A radioisotope has a decay constant of 10(^{-7})s(^{-1}). The average life of the radioisotope is

A radioisotope has a decay constant of 10(^{-7})s(^{-1}). The average life of the radioisotope is

  • A.
    1.00 x 107s
  • B.
    6.93 x 106s
  • C.
    1.00 x 10-7s
  • D.
    6.93 x 107s
Correct Answer: Option B
Explanation

Average life / Half life (T(_{frac{1}{2}})) = ln2/λ = 0.693/10(^{-7})
= 0.693 x 10(^7)
= 6.93 x 10(^6)

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