The half-life of a radioactive element depends upon:
Correct answer: D. None of the above options are correct
- A. Amount of element present
- B. Pressure
- C. Temperature
- D. None of the above options are correct
Explanation
The half-life of a substance doesn't depend upon the amount, temperature, and pressure. It depends upon the nature of the substance, which is not in the options. The half-life period of a radioactive element is the time required for a quantity to fall to half its value as measured at the beginning of the time period. It does not depend on the temperature, concentration, or the amount of element, but just depends on the time factor.
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Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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