Which rays have the highest ionization power?
Correct answer: A. α-rays
- A. α-rays
- B. β-rays
- C. γ-rays
- D. X-rays
Explanation
Alpha particles have the highest ionization power of the three main types of ionizing radiation: alpha, beta, and gamma. This is because alpha particles are the most massive and have the highest charge. When an alpha particle collides with an atom, it can knock out multiple electrons, leaving the atom highly ionized.
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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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