CHEM 312
Name:___________________________
Quiz 1
Assigned: 12 September 2013
Prepare to discuss in class on 24 September 2013
The test is take-home. Please feel free to contact me via the blog with questions
Lecture 1 (Introduction, Chart of the Nuclides), and Lecture 2 (Nuclear Properties)
Use the chart of the nuclides, table of the isotopes, and/or data from the web links from lecture 1 to
answer the following questions.
1.
(5 Points) Provide a route for the production of 238Pu?
5 point bonus: What is the use of this isotope? Give an example of where it has been used.
2.
(5 Points) Below is a mass parabola from the table of the isotopes for A=40. Use this figure to
show which isotopes of A=40 are stable?
1
3.
(15 Points) Identify the daughter and the decay mode for the following isotopes
Parent isotope
210
Po
Decay mode

Daughter Isotope
196
Pb
204
Bi
222
At

99m
Tc
99
Tc
14
C
239

261

Pu
Rf
2
4.
(5 Points) Provide the number of naturally occurring isotopes for the elements below. This
includes long lived radioactive isotopes.
Element
Re
Number of Stable Isotopes
V
K
La
Sn
Sb
In
H
Pm
Lr
5.
(5 Points) Provide the spin and parity of the following isotopes
Isotope
242mAm
Spin
Parity
239Pu
240Pu
119mSn
65Ni
99Tc
242Am
179mHf
3
(10 Points) Provide the cumulative fission yields for the A isobars from 233U, 235U, and 239Pu.
6.
A
233U
235U
239Pu
116
95
72
160
99
(10 Points) Provide the decay constants (in s-1) for the following isotopes
7.
Isotope
50
Ca
 (s-1)
81
Zn
95
Zr
137
Cs
151
Sm
241
Am
242
Pu
4
8.
(5 Points) List the 4 stable odd-odd isotopes
9.
(15 Points) Determine the Q value for the following reactions
Reaction or decay
Alpha decay of 239Pu
Q value (MeV)
45
Sc + 4He5H+44Ti
decay of 137Cs
n+ 235U232Th+α
n+ 235U236U
EC of 192Hg
Formation of stable Au from bombarding 208Pb with a proton
5
10. (10 Points) Calculate the mass of 1 mL of nuclear matter. Base the calculation on an 56Fe
nucleus, with ro = 1.3 fm to determine the radius of 56Fe.

11. (5 Points) Please provide the gamma decay intensities for the data below
Isotope
46
Sc
Gamma Energy (keV)
1120.5
103
497.1
198
411.8
241
59.1
152
121.8
152
1408.0
152
344.3
Ru
Au
Am
Eu
Eu
Eu
%
6
12. (10 Points) What is nuclear skin thickness? How can one measure nuclear radii?
7