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Radioactivity Worksheet Answers
Radioactivity
Worksheet
Answers
Section A:
Alpha Decay
1.
256Lr 4He + 252Md
103 2 101
2.
211Fr 4He + 207At
2 87 85
3.
233U 4He + 229Th
2 92 90
4.
237Np 4He + 233Pa
2 93 91
5.
151Ho 4He + 147Tb
2 67 65
6.
144Nd 4He + 140Ce
2 60 58
7.
175Pt 4He + 171Os
2 78 76
Section B:
Beta Decay
8.
201Au –1e + 201Hg
0 79 80
9.
239Np –1e + 239Pu
0 93 94
10.
13B –1e + 13C
0 5 6
11.
203Hg –1e + 203Tl
0 80 81
12.
247Am –1e + 247Cm
0 95 96
13.
90Sr –1e + 90Y
0 38 39
14.
99Tc –1e + 99Ru
0 43 44
Section C:
Positron
Production
15.
75Br 1e + 75Se
35 0
34
16.
30P 1e + 30Si
15 0
14
17.
61Zn 1e + 61Cu
30 0
29
18.
68Ga 1e + 68Zn
31 0
30
19.
83Sr 1e + 83Rb
38 0
37
20.
15O 1e + 15N
8 0
7
21.
155Dy 1e + 155Tb
66 0
65
Section D:
Electron
Capture
22.
38Ar + –1e 38Cl
18
0 17
23.
168Tm + –1e 168Er
69 0
68
24.
145Sm + –1e 145Pm
62 0
61
25.
247Es + –1e 247Cf
99 0
98
26.
125I + –1e 125Te
53 0
52
27.
73As + –1e 73Ge
33 0
32
28.
257Md + –1e 257Fm
101 0
100
