5. All the following isotopes undergo either alpha decay or beta decay. Predict whieh occurs for each. You can take the average atomic mass for each element as an indication of where the stable mass lies, and then judge whether the isotope's neutron/proton ratio ie l or too low, (This is not 100% reliable in general, but will do for this question.) For one alabe decay, demonstrate numerically that the neutron/proton ratio does change in the appronriete direction. 183 l81.5 192 I 193 28 190 130 a) 32Si 187 184Os c) 180W 74 d) 195I. 195 Ir 77 14 6. We saw in question 2 that positron emission is possible as a decay mode. In general, will this occur when the neutron/proton ratio is too high; or too low?

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5. All the following isotopes undergo either alpha decay or beta decay. Predict whieh
occurs for each. You can take the average atomic mass for each element as an indication of
where the stable mass lies, and then judge whether the isotope's neutron/proton ratio ie l
or too low, (This is not 100% reliable in general, but will do for this question.) For one alabe
decay, demonstrate numerically that the neutron/proton ratio does change in the appronriete
direction.
183 l81.5
192 I 193
28
190
130
a) 32Si
187
184Os
c) 180W
74
d) 195I.
195 Ir
77
14
6. We saw in question 2 that positron emission is possible as a decay mode. In general, will this
occur when the neutron/proton ratio is too high; or too low?
Transcribed Image Text:5. All the following isotopes undergo either alpha decay or beta decay. Predict whieh occurs for each. You can take the average atomic mass for each element as an indication of where the stable mass lies, and then judge whether the isotope's neutron/proton ratio ie l or too low, (This is not 100% reliable in general, but will do for this question.) For one alabe decay, demonstrate numerically that the neutron/proton ratio does change in the appronriete direction. 183 l81.5 192 I 193 28 190 130 a) 32Si 187 184Os c) 180W 74 d) 195I. 195 Ir 77 14 6. We saw in question 2 that positron emission is possible as a decay mode. In general, will this occur when the neutron/proton ratio is too high; or too low?
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