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Zorluk: KolayNatural Radioactivity and Radiation Emissions

Which of the following types of radiation emitted during natural radioactive decay has the greatest ionizing power?

  1. α\alpha-particlesCevap
  2. B
    β\beta-particles
  3. C
    γ\gamma-rays
  4. D
    X-rays

Cevap

Alpha particles (α\alpha-particles) have the highest ionizing power among natural radioactive emissions.
Alpha particles have the largest charge (+2e+2e) and mass among natural nuclear emissions, allowing them to exert strong electrostatic forces on atoms in their path and strip away electrons easily, giving them the highest ionizing capability.

Adım Adım Çözüm

1
Identify the nature, mass, and charge of natural radiation emissions
α\alpha-particles consist of helium nuclei (24He^4_2\text{He}) with mass 4 u4\text{ u} and charge +2e+2e; β\beta-particles are high-speed electrons with negligible mass and charge −e-e; γ\gamma-rays are neutral photons.
Ionization depends directly on charge magnitude and kinetic energy transfer capacity during interactions with matter.
2
Compare the ionizing power of the emissions
Because α\alpha-particles carry a large +2e+2e charge and move relatively slowly due to their larger mass, they interact strongly with orbital electrons, knocking them off atoms easily along a short path.
Relative ionizing power follows the ratio of roughly 10,000:100:110,000 : 100 : 1 for α:β:γ\alpha : \beta : \gamma emissions.

Anahtar Kavram

Ionizing power vs. Penetrating power of radioactive emissions
Tahmini Süre:45s
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Konular

Natural Radioactivity and Radiation Emissions

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