Name
Class
Date
Concept-Development
Practice Page
39-2
Natural Transmutation
© Pearson Education, Inc., or its affiliate(s). All rights reserved.
Fill in the decay-scheme diagram below, similar to that shown on page 794 in the textbook, but
beginning with U-235 and ending up with an isotope of lead. Use the table at the left, and identify
each element in the series with its chemical symbol.
What isotope is the final product?
CONCEPTUAL PHYSICS
Chapter 39 The Atomic Nucleus and Radioactivity 171
Nuclear Reactions
Complete these nuclear reactions.
238
234
U
92
234
2.
90
234
Th
90
234
Th
91
Pa
Pa
Rn
86
+
91
220
4.
5.
216
Po
84
216
6.
7.
8.
+
+
3.
84
+
Po
+
210
Bi
83
1
n +
0
+
10
B
5
4
+
2
0
–1
4
2
4
2
He
He
0
e
–1
4
2
0
–1
He
e
4
+ He
2
CONCEPTUAL PHYSICS
172 Chapter 39 The Atomic Nucleus and Radioactivity
© Pearson Education, Inc., or its affiliate(s). All rights reserved.
1.