Radioactivity is _ process:
Correct answer: D. Both A and B
- A. Spontaneous decaying
- B. Self-disintegration property
- C. Chemical property
- D. Both A and B
Explanation
Radioactivity is the process by which an unstable atomic nucleus loses energy by emitting radiation. This is a spontaneous process that involves the self-disintegration of the nucleus, making both A and B correct descriptions.
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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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