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AP EAMCET2002ChemistryChemical Kinetics

10 ~g of a radioactive element is disintegrated to 1 ~g in 2.303 minutes. What is the half-life (in minutes) of that radioactive element?

Options

  1. A1 / 0.693
  2. B6.93
  3. C1
  4. D0.693

Correct answer

D. 0.693

Step-by-step solution

Radioactive disintegration is first order reaction aligned k & = 2303 t a a-x & = 2.303 2.303 10 1 k & =1 t_ 1 / 2 & = 0.693 k = 0.693 1 & =0.693 ~min aligned

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