Chapter 32: Nuclear Physics and Nuclear Radiation
Practice Questions



1.  

What is the Atomic Number of 23692U?
92
144
236
328

2.  

What is the Atomic Mass Number of 23692U?
92
144
236
328

3.  

What is the Neutron Number of 23692U?
92
144
236
328

4.  

What is the mass of 23692U to the nearest u?
328 u
236 u
235 u
144 u

5.  

What is the actual mass of 23692U?
236 u
236.0001 u
236.038735 u
236.045563 u

6.  

What is the answer to question 5 in kilograms?
3.919631x10-25 Kg
3.9296766x10-26 Kg
3.9431411x10-25 Kg
3.9395386x10-24 Kg

7.  

Which of the following is not a reason why the answers to question 4 and 5 are not exactly equal?
The mass of the proton plus the electron is not exactly 1 u.
The mass of the neutron is not exactly 1 u.
Several different isotopes of Uranium exist in nature.
E=mc2

8.  

What element is given by 4020X, where X stands for the element symbol, but is not the symbol?
Calcium
Zirconium
Xenon
Iron

9.  

What is the binding energy of the 126C nucleus?
12 MeV
937 keV
92 MeV

10.  

9038Sr is radioactive. What form of radiation does it emit?
alpha
beta
gamma
delta

11.  

What is the half-life of 9038Sr?
23 s
11.8 days
28.8 yr
4.1x109 years

12.  

What isotope results from the decay of 9038Sr?
9037Rb
9039Y
8939Y
8938Sr

13.  

If you start out with 8x1024 of 9038Sr, how many do you have after 2 half-lives?
2x1024
8x106
2x106

14.  

The mass of 9038Sr is 89.907746 u and the mass of the atom its beta decays to is 89.905856 u. What is the energy released in the decay?
1.2 MeV
112 keV
.546 MeV
1.8 MeV

15.  

How many 9038Sr atoms would there be in 1 gram of the substance?
1.7x1012
6.7x1021
6.7x1024
1.7x1026

16.  

What is the decay constant for 9038Sr?
28.8 years
.0241 year-1
.0344 year-1
.52 year-1

17.  

How long would it take a sample of 7x1021 of 9038Sr atoms to decrease to 6x1010 atoms?
28.8 years
107 years
1059 years
1000000 years

18.  

What would be the activity of the strontium sample at the end of the period covered in question 17?
46 decays/s
1130 decays/s
21100 decays/s
6.7x1021 decays/s

19.  

22890Th emits a gamma ray. The resulting nucleus is
22890Th
22891Pa
22990Th
23092U

20.  

In beta decay, b-, an electron is emitted along with the daughter nucleus. What is the other particle emitted?
beta particle
antineutron
neutrino
antineutrino

21.  

21084Po decays by alpha decay. The resulting isotope is
21082Pb
21081Bi
20881Bi
20682Pb

22.  

What is the energy released in the above decay?
234 MeV
23.4 MeV
5.4 MeV
13.6 eV

23.  

32He+32He -> 11H+11H+?
32He
42He
31H
43Li

24.  

n+23592U -> n+n+14257La+?
9334Se
9135Br
9136Kr
9235Br

25.  

Which of the following is not an example of ionizing radiation?
alpha
beta
gamma
X-ray
microwave

26.  

Which of the following is not an example of charged particle radiation?
alpha
beta
gamma

27.  

Which of the following is not a unit radiation dose or exposure?
rad
roentgen
curie


Practice Questions: Practice Questions by Carl Adler, East Carolina University. ©2002 by Prentice Hall, Inc.


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