Chemistry, 28.05.2021 02:10, xxleeciexx

Isotopes with unstable nuclei are 1 and are called 2. The 3 of radioisotopes decay to 4nuclei plus emission of large amounts of 5 . The radiation may be alpha, 6, or gamma. 7 radiation consists of alpha particles (positively charged 8 nuclei) that are easily stopped by a sheet of paper. Beta radiation is composed of fast-moving particles, which are 9. Beta radiation is more penetrating than alpha radiation; it is stopped by 10. 11 radiation is electromagnetic radiation. Gamma radiation has no 12 or electrical charge. It is extremely penetrating. 13 bricks and 14 reduce the intensity of gamma radiation but do not completely 15 it.

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