the process by which a nucleusof an unstable atom loses energy by emitting particles of ionizing rad...: ответ на тест 3675 - Английский язык

The process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation is …

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Radioactive substances are composed of unstable atoms that break down and release high-level energy called radiation. These atoms eventually form new elements. There are three types of radiation, known as alpha rays, beta rays, and gamma rays. Alpha rays consist of four atomic particles: two protons and two neutrons. They are the weakest type of radiation and have a positive electrical charge. Beta rays are more powerful and are composed of atomic particles called electrons, which have a negative charge. Gamma rays are the most powerful and a pure form of energy with no mass and no charge.
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