Which of the following is not true about radioactivity?
Correct answer: D. Is a property relating to outside the nucleus
- A. Is a nuclear phenomenon
- B. Is not altered by any physical change
- C. Is not altered by any chemical change
- D. Is a property relating to outside the nucleus
Explanation
Radioactivity is a nuclear phenomenon and it involves changes in the nucleus. It is not related to properties outside the nucleus.
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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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