180 170 160 150 140 130 120 110 100 90 80 70 60 50 Nonradioactive 40 Radioactive 30 20 10 O 10 20 30 40 50 60 70 80 90 100 110 120 Number of protons (Z) Figure 21.2 This plot shows the nuclides that are known to exist and those that are stable. The stable nuclides are indicated in blue, and the unstable nuclides are indicated in green. Note that all isotopes of elements with atomic numbers greater than 83 are unstable. The solid line is the line where n = Z. Number of neutrons (n)

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Chapter21: Nuclear Chemistry
Section: Chapter Questions
Problem 24E: Explain, in terms of Figure 21.2, how unstable heavy nuclides (atomic number > 83) may decompose to...
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Explain, in terms as shown, how unstable heavy nuclides (atomic number > 83) may decompose to form nuclides of greater stability (a) if they are below the band of stability and (b) if they are above the band of stability.

180
170
160
150
140
130
120
110
100
90
80
70
60
50
Nonradioactive
40
Radioactive
30
20
10
O 10
20
30
40
50
60 70
80
90
100
110
120
Number of protons (Z)
Figure 21.2 This plot shows the nuclides that are known to exist and those that are stable. The stable nuclides are
indicated in blue, and the unstable nuclides are indicated in green. Note that all isotopes of elements with atomic
numbers greater than 83 are unstable. The solid line is the line where n = Z.
Number of neutrons (n)
Transcribed Image Text:180 170 160 150 140 130 120 110 100 90 80 70 60 50 Nonradioactive 40 Radioactive 30 20 10 O 10 20 30 40 50 60 70 80 90 100 110 120 Number of protons (Z) Figure 21.2 This plot shows the nuclides that are known to exist and those that are stable. The stable nuclides are indicated in blue, and the unstable nuclides are indicated in green. Note that all isotopes of elements with atomic numbers greater than 83 are unstable. The solid line is the line where n = Z. Number of neutrons (n)
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