Radioactivity 0.0 / 5 ? PhysicsRadioactivityatomsGCSEOCR Created by: Chrissie.Created on: 01-05-17 13:13 releasing ionizing radiation radioactive 1 of 6 radioactive elements found in nature background radiation 2 of 6 atoms with the same number of protons, but different number of neutrons isotope 3 of 6 can be stopped by paper alpha 4 of 6 can be stopped by aluminium beta 5 of 6 can be stopped by lead gamma 6 of 6
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