Which of the following has maximum ionizing power?
Correct answer: A. Ξ±
- A. Ξ±
- B. Ξ²
- C. Ξ³
- D. Neutron
Explanation
Alpha particles have the highest ionization power than the other two types of radiation owing to the fact that an π°-particle is a doubly ionized helium nucleus, i.e. He+2. π«-particles are simply electrons (e-1), They have moderate ionizing power and π²-rays are uncharged EM radiation and have the lowest ionizing power among all. Therefore, out of the three, π°-rays have the most electric charge and are the most massive. Hence, when they are passed through a substance, they tend to ionize the substance (by attracting and stripping off the electrons from it) than π«-and π²-radiation. X-rays are also a part of EM radiation, but still cannot ionize as powerful as π°-rays. Whereas neutrons have no charge and hence no ionization power.
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