Which of the following substances cannot be emitted by radioactive substances during their decay?
Correct answer: A. proton
- A. proton
- B. neutrinos
- C. helium nuclei
- D. electrons
Explanation
Option A is correct since during radioactive decay, alpha, beta or gamma rays are emitted. We know that Alpha particles can also be called Helium, whereas Beta are interchangeably called electrons and neutrinos have negligible mass so they resemble gamma rays. All of these can be emitted except for protons.
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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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