Name: __________________________________________ Date: ______________________________ Period: ________
Nuclear Chemistry – Alpha, Beta, and Gamma Decay Practice
Identify the following examples as alpha, beta, or gamma decay.
1.
233
U
92

4
He
2
+
229
Th
90
_______
4.
202
Tl  202
Tl
81
81
2.
99
Tc
43

0
e
−1
+
99
Ru
44
_______
5.
125
I
53
3.
175
Pt
78
+ 42 He _______
6.
82
Br
35

171
Os
76


0
0
ɣ +
82
Kr
36
+ 00 ɣ _______
125
I
53
+
0
e
−1
_______
_______
Alpha Decay: Write the alpha decay equations for the following nuclides.
Example:
208
Po
84

4
He
2
+
204
Pb
82
7.
256
Lr
103
9.
185
Au
79
8.
231
Pa
91
10.
211
Fr
87
Beta Decay: Write the beta decay equations for the following nuclides.
Example:
11.
14
C
6

14
N
7
+
0
e
−1
24
Na
11
247
Am
95
13.
Name: __________________________________________ Date: ______________________________ Period: ________
Nuclear Chemistry – Alpha, Beta, and Gamma Decay Practice
Identify the following examples as alpha, beta, or gamma decay.
1.
233
U
92

4
He
2
+
229
Th
90
_______
4.
202
Tl  202
Tl
81
81
2.
99
Tc
43

0
e
−1
+
99
Ru
44
_______
5.
125
I
53
3.
175
Pt
78
+ 42 He _______
6.
82
Br
35

171
Os
76
Alpha Decay: Write the alpha decay equations for the following nuclides.
Example:
208
Po
84

4
He
2
+
204
Pb
82
7.
256
Lr
103
9.
185
Au
79
8.
231
Pa
91
10.
211
Fr
87
Beta Decay: Write the beta decay equations for the following nuclides.
Example:
11.
24
Na
11
14
C
6

14
N
7
+
0
e
−1
13.
247
Am
95


0
0
ɣ +
82
Kr
36
+ 00 ɣ _______
125
I
53
+
0
e
−1
_______
_______
12.
201
Au
79
14.
90
Sr
38
Balancing Decay Reactions: Fill in the blank in each of the following decay reactions with the correct decay particle or
decayed nucleus that will balance the reaction, also state whether it is alpha or beta decay
15.
184
W
74
16.
35
S
16
17.
210
Pb
82
4
He
2


+
206
Hg
80
is an example of _________________ decay.
+
207
Tl
81
is an example of _________________ decay.
4
He
2
14
Po
6
0
e
−1
+

20. ___________
12.
is an example of _________________ decay.
+


35
Cl
17
___________
18. ____________
19.
is an example of _________________ decay.
+
__________

___________
0
e
−1
__________
is an example of _________________ decay.
60
Ni
28
is an example of _________________ decay.
+
201
Au
79
14.
90
Sr
38
Balancing Decay Reactions: Fill in the blank in each of the following decay reactions with the correct decay particle or
decayed nucleus that will balance the reaction, also state whether it is alpha or beta decay
15.
184
W
74
16.
35
S
16
17.
210
Pb
82
4
He
2


+
__________

is an example of _________________ decay.
+
206
Hg
80
is an example of _________________ decay.
+
207
Tl
81
is an example of _________________ decay.
4
He
2
14
Po
6
0
e
−1
+
20. ___________
35
Cl
17
___________


is an example of _________________ decay.
+
18. ____________
19.
___________

0
e
−1
__________
is an example of _________________ decay.
60
Ni
28
is an example of _________________ decay.
+