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Answer:

The half-life of a radioactive substance is the time the substance takes to be reduced by half of its initial amount as a consequence of decay.

Explanation:

  • The half-life of a radioactive substance is the time the substance takes to be reduced by half of its initial amount as a consequence of decay.
  • It is a characteristic constant.
  • It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
  • Also, it is clear that in first order decay the half-life time is independent of the initial concentration.

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