Why is the ionizing power of α – parties greater than that of γ-rays?
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Because of the large mass of the alpha particle, it has the highest ionizing power and the greatest ability to damage tissue. That same large size of alpha particles, however, makes them less able to penetrate matter.
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Ionizing power of α – parties greater than that of γ-ray because α – particles are heavy particles and their speed is comparatively small, so they collide more frequently with atoms of the medium and ionize them
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