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JEE Main202522 Jan 2025Morning ShiftChemistryChemical KineticsActual

Which of the following statement is not true for radioactive decay?

Options

  1. ADecay constant increases with increase in temperature.
  2. BAmount of radioactive substance remained after three half lives is 1 8 th of original amount.
  3. CDecay constant does not depend upon temperature.
  4. DHalf life is 2 times of 1 rate constant .

Correct answer

A. Decay constant increases with increase in temperature.

Step-by-step solution

For radioactive decay, decay constant does not depend upon temperature because for radioactive decay activation energy is zero.

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