The radioisotopes are the ones which are radioactive in nature and decay after some time. Explanation: All the given options are radioisotopes of the respective elements. Note this does not make the food radioactive. (1) carbon-14 (3) cobalt-60 (2) potassium-37 (4) iodine-131 See answers Advertisement RomeliaThurston Answer: The correct answer is Option 4. 8.1 days food irradiation, cancer therapy hyperthyroid treatment. Irradiation of Food: radiation from isotopes (e.g., Iodine-131, Cobalt-60 or Cesium-137) can be used to control bacteria or invasive pests on foods. carbon dating measuring blood volume cobalt-60 iodine-131. Nuclear Power: energy from radiation emitted as isotopes undergo decay can be used to generate electricity (often Uranium-233 and 235). Carbon-14 is frequently used for this purpose. Radioactive Dating: the age of substances can be determined by measuring the relative abundance of isotopes in a sample. Medical: In addition to being used as tracers for diagnosis, radioactive isotopes (often Strontium-89 and Samarium-153) can be used in the treatment of diseases like cancer. Tracers are also used to study chemical reactions and biological processes. For PET scans the isotope used is usually Fluorine-19. Radiation emitted from the radioisotope can be detected with a scanner. For example, attaching a tracer to a molecule that binds to certain cancer cells can help diagnose the location of the cancer. Tracers: radiation from isotopes can pass through substances, including body tissues. Because of this certain isotopes are used as tracers or a source of energy. For Iodine-131 much more shielding is required, and local screening is often. Radioisotopes are unstable and emit radiation when they undergo nuclear decay. Appendix 2: Applications of Bioassay for I-125 and I-131. The large change in mass influences Hydrogen's chemical and physical properties more than heavier elements. High-energy gamma rays emitted by cobalt-60 isotopes destroy cancerous tumours. Therefore any changes in the number of neutrons results in a proportionally large change in mass. cobalt-60 iodine-131 Advertisement Remove all ads Solution cobalt-60 Cobalt-60 is used in the treatment of cancer. Hydrogen has the lowest mass of all elements. For example, C-12 and C-13 are stable isotopes but because they are similar they don't have specific uses. PROTONS-15 NEUTRONS-17 B.PROTONS-24 NEUTRONS-27 C. Indicate the number of protons and neutrons in each isotope: (a) phosphorus-32, (b) chromium-51, (c) cobalt-60, (d) technetium-99, (e) iodine-131, (f) thallium-201. With some effort they can be separated, but there is usually not a compelling reason to do so. Question Each of the following isotopes is used in medicine. Because stable isotopes have similar chemical and physical properties, they have few uses.
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