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Predicting the decay mode Based on the valley of stability, the following processes generally tend to produce more stable neutron-to-proton (n/p) ratios: • Nuclei with Z284 tend to undergo a emission. • Nuclei with high n/p ratios undergo B(e) emission. • Heavy nuclei with low nip ratios are more likely to undergo electron (e) capture. • Light nucle with low nip ratios are more likely to undergo positron (e) emission. The classification "high" or "low" nip ratio can be determined by finding the coordinates on the graph that correspond to the number of protons (2 or horizontal value) and neutrons (or vertical value) in a given isotope. Then, observe whether this set of coordinates is above, within, or below the stability valley. Part B Using general tendencies and the chart given in the introduction, predict the most likely mode of decay of each of the following radioactive isotopes. Drag the appropriate items to their respective bins. ▸ View Available Hint(s) Reset Help iridium-104 thorium-232 lodine-137 calcium-50 fuorine-17 a decay Constants adecay emission capture

Predicting the decay mode Based on the valley of stability, the following processes generally tend to produce more stable neutron-to-proton (n/p) ratios: • Nuclei with Z284 tend to undergo a emission. • Nuclei with high n/p ratios undergo B(e) emission. • Heavy nuclei with low nip ratios are more likely to undergo electron (e) capture. • Light nucle with low nip ratios are more likely to undergo positron (e) emission. The classification "high" or "low" nip ratio can be determined by finding the coordinates on the graph that correspond to the number of protons (2 or horizontal value) and neutrons (or vertical value) in a given isotope. Then, observe whether this set of coordinates is above, within, or below the stability valley. Part B Using general tendencies and the chart given in the introduction, predict the most likely mode of decay of each of the following radioactive isotopes. Drag the appropriate items to their respective bins. ▸ View Available Hint(s) Reset Help iridium-104 thorium-232 lodine-137 calcium-50 fuorine-17 a decay Constants adecay emission capture

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter19: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 2RQ
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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 90 Belt of stability na 80 70 60 60 7 50 40 30 1:1 neutron-to- 20 proton ratio 10 100 0 0 Casan? 10 20 30 40 50 60 70 80 Number of protons < 1 of 1 Predicting the decay mode Based on the valley of stability, the following processes generally tend to produce more stable neutron-to-proton (n/p) ratios: • Nuclei with Z> 84 tend to undergo a emission. • Nuclei with high n/p ratios undergo Be) emission. • Heavy nuclei with low n/p ratios are more likely to undergo electron (e) capture. • Light nuclei with low n/p ratios are more likely to undergo positron (e) emission. . ▾ Part B The classification "high" or "low" n/p ratio can be determined by finding the coordinates on the graph that correspond to the number of protons (or horizontal value) and neutrons (y or vertical value) in a given isotope. Then, observe whether this set of coordinates is above, within, or below the stability valley. Using general tendencies and the chart given in the introduction, predict the most likely mode of decay of each of the following radioactive isotopes. Drag the appropriate items to their respective bins. ▸ View Available Hint(s) iridium-164 thorium-232 iodine-137 calcium-50 a decay adecay Submit Provide Feedback Reset Help P Pearson fluorine-17 Peemission capture 5 of 43 Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | Review | Constants | Periodic Table Next > >
Transcribed Image Text: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 90 Belt of stability na 80 70 60 60 7 50 40 30 1:1 neutron-to- 20 proton ratio 10 100 0 0 Casan? 10 20 30 40 50 60 70 80 Number of protons < 1 of 1 Predicting the decay mode Based on the valley of stability, the following processes generally tend to produce more stable neutron-to-proton (n/p) ratios: • Nuclei with Z> 84 tend to undergo a emission. • Nuclei with high n/p ratios undergo Be) emission. • Heavy nuclei with low n/p ratios are more likely to undergo electron (e) capture. • Light nuclei with low n/p ratios are more likely to undergo positron (e) emission. . ▾ Part B The classification "high" or "low" n/p ratio can be determined by finding the coordinates on the graph that correspond to the number of protons (or horizontal value) and neutrons (y or vertical value) in a given isotope. Then, observe whether this set of coordinates is above, within, or below the stability valley. Using general tendencies and the chart given in the introduction, predict the most likely mode of decay of each of the following radioactive isotopes. Drag the appropriate items to their respective bins. ▸ View Available Hint(s) iridium-164 thorium-232 iodine-137 calcium-50 a decay adecay Submit Provide Feedback Reset Help P Pearson fluorine-17 Peemission capture 5 of 43 Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | Review | Constants | Periodic Table Next > >
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