Set A 1. The figure below shows a fragment from the Karlsruhe nuclide table regarding a nuclide. Based on it, answer the following questions: a) How does this nuclide decay? What is the half-life and energy of radiation? Write down the main decay diagram. b) Knowing what type of radiation accompanies its decay, describe the mechanisms of interaction of this radiation with matter. c) Knowing what type of radiation accompanies its decay, write what types of diagnostic and/or therapeutic methods of nuclear medicine this nuclide is used in. Describe very briefly what this method(s) is. I 131 8.04 d ẞ 0.6; 0.8... y 364; 637: σ 0.7 284 2. In March this year, a message appeared in the media: "Westinghouse Electric Company and its project partners have confirmed that the third unit of the Vogtle nuclear power plant has reached a critical condition." Explain what this message means. Support your explanation with a concise description of the principle of operation of a nuclear reactor. it is found in the generator with 99Mo

13. Complete the following nuclear equations by filling in the missing atomic symbols then classify the nuclear reactions as decay (alpha, beta, positron or gamma), bombardment, fission, or fusion. 27 a. 23A1 + [sh'] → Na + He b. 1331 - 53 c. 26Zr + [4H₁₂ ] [atle] 40 220 d. [ 2.² // Rngd Xe -ie + 1xe] 54 24 11 144 e. 235U + n → [ C ] + 39Rb + 2 n 37 92 55 26 8. 14Si → +ie + j. 216 He + 24 Po f. 280 → [B]+ 20F ´Al 99 →>>> › n + 22 Mo 42 i. Be + n ->> 99m Tc → 43 26 h. ²H + [²H₁ ] → 2He + ¼n ] 13 10 » [ Bel 4 or + [99m Te 43 8

Set A 1. The figure below shows a fragment from the Karlsruhe nuclide table regarding a nuclide. Based on it, answer the following questions: a) How does this nuclide decay? What is the half-life and energy of radiation? Write down the main decay diagram. b) Knowing what type of radiation accompanies its decay, describe the mechanisms of interaction of this radiation with matter. c) Knowing what type of radiation accompanies its decay, write what types of diagnostic and/or therapeutic methods of nuclear medicine this nuclide is used in. Describe very briefly what this method(s) is. I 131 8.04 d ẞ 0.6; 0.8... y 364; 637: σ 0.7 284 2. In March this year, a message appeared in the media: "Westinghouse Electric Company and its project partners have confirmed that the third unit of the Vogtle nuclear power plant has reached a critical condition." Explain what this message means. Support your explanation with a concise description of the principle of operation of a nuclear reactor. it is…

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Identification and Characterization of Unstable and Stable Nuclei Nuclear stability can in general be predicted based on the following considerations: • Nuclei with 84 protons or more are unstable. • Nuclei containing a magic number of protons and/or neutrons tend to be stable. • Stable nuclei often contain even numbers of protons and/or neutrons. These factors are reflected in the given graph (Figure 1). which shows the valley of stability as a function of number of neutrons and protons. Figure Number of neutrons 110 100 90 80 70 60 50 40 30 20 10 0 0 www Belt of stability 10 1:1 neutron-to- proton ratio 20 30 40 50 60 70 80 Number of protons 1 of 1 "Magic" numbers A magic number is the name given to certain numbers of protons or neutrons that have a high correlation to stability in nuclei: magic numbers of protons: 2, 8, 20, 28, 50, 82 magic numbers of neutrons: 2, 8, 20, 28, 50, 82, 126, 184 ▼ A plot of the number of neutrons versus the number of protons for all known stable nuclei,…

Precise measurements give the following masses: nuclide mass H He 1.0078 u 4.00260 u particle 1 n 0 -19 0 ¡e Now consider the following nuclear reaction: 2H+ 2n → He Is energy released or absorbed by this reaction? 1.0086649 u 4 5.4858×10 u 5.4858× 104 u If you said energy was released or absorbed, calculate how much energy is released or absorbed. mass Give your answer in both kJ/mol and MeV. Round each of your answers to 3 significant digits. Note: take particular care to keep enough digits in any intermediate calculation, and use enough digits in any scientific constants you need, since the data with which you are working are very precise. released absorbed neither released nor absorbed O I need more information to decide. kJ/mol Mev x10

Enter the correct nuclide symbol in each open tan rectangle given, which shows the sequences of decays in the natural radioactive series starting with the long-lived isotope uranium-235 and ending with the stable nucleus lead-207.

a. Write the nuclear equation for the alpha decay of ^221-81Rn. b. Write the nuclear equation for the radioactive decay of ^21-15P by positron emission. c.  Imagine that you started with a 0.1 g sample of iodine-131, and now you have only 0.025 g remaining. If the half-life of iodine-131 is 8 days, how old is the sample? Write 2 - 3 sentences explaining your reasoning. d. Draw a diagram that illustrates how nuclei change during nuclear fusion. Write 2 - 3 sentences describing the process of nuclear fusion, including where it occurs and how the energy released can be harnessed for use in homes.