Question 1

Determine the identity of the daughter nuclide from the beta decay of 99
43 Tc.

Accepted Answer

A)  100
44 Ru 
B)  ${ } _ { 45} ^ { 103} $ Rh 
C)  $\begin{array} { l } 
95 \
41
\end{array}$ Nb 
D)  99
42 Mo 
E)  99
44 Ru 
A)  100
44 Ru 
B)  ${ } _ { 45} ^ { 103} $ Rh 
C)  $\begin{array} { l } 
95 \
41
\end{array}$ Nb 
D)  99
42 Mo 
E)  99
44 Ru E

Question 2

Determine the identity of the daughter nuclide from the alpha decay of ${ } _ { 86} ^ { 222 } $ Rn.

Accepted Answer

A)  218
84 Po 
B)  $\begin{array} { c } 
226 \
88
\end{array}$ Ra 
C)  ${ } _ { 90 } ^ { 224 } $ Th 
D)  $\begin{array} { c } 
223 \
86
\end{array}$ Rn 
E)  ${ } _ { 85 } ^ { 221 } $ At 
A)  218
84 Po 
B)  $\begin{array} { c } 
226 \
88
\end{array}$ Ra 
C)  ${ } _ { 90 } ^ { 224 } $ Th 
D)  $\begin{array} { c } 
223 \
86
\end{array}$ Rn 
E)  ${ } _ { 85 } ^ { 221 } $ At A

Question 3

Complete the following equation of nuclear transmutation. 
238
92 U + $\begin{array} { c } 
12 \
6
\end{array}$ C ? 244
98 Cf + 6 ________

Accepted Answer

A)  $\begin{array} { c } 
0 \
+ 1
\end{array} \mathrm { e }$ 
B)  ${ } _ { 0 } ^ { 0 } \mathrm {~g}$ 
C)  $\begin{array} { c } 
0 \
- 1
\end{array}$ e 
D)  $\begin{array} { c } 
0 \
- 1
\end{array} \mathrm { e }$ 
E)  1${ } _ { 0 } ^ { 1 } \mathrm { n }$ 
A)  $\begin{array} { c } 
0 \
+ 1
\end{array} \mathrm { e }$ 
B)  ${ } _ { 0 } ^ { 0 } \mathrm {~g}$ 
C)  $\begin{array} { c } 
0 \
- 1
\end{array}$ e 
D)  $\begin{array} { c } 
0 \
- 1
\end{array} \mathrm { e }$ 
E)  1${ } _ { 0 } ^ { 1 } \mathrm { n }$ E

Question 4

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second.After 2.00 y.,the activity of the sample declines to 3115 disintegrations per second.The $\text { half-life }$ of $\text { curium-243 }$ is ----------$\text { y. }$

Accepted Answer

A) 0.157 
B) 2.13 
C) 32.6 
D) 1.88 
E) 22.6 
A) 0.157 
B) 2.13 
C) 32.6 
D) 1.88 
E) 22.6

Question 5

Calculate the mass defect in Ni-59 if the mass of a Ni-59 nucleus is 58.69344 amu.The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.

Accepted Answer

A) 0.23212 amu 
B) 0.77902 amu 
C) 0.23041 amu 
D) 0.77589 amu 
E) 0.22198 amu 
A) 0.23212 amu 
B) 0.77902 amu 
C) 0.23041 amu 
D) 0.77589 amu 
E) 0.22198 amu

Question 6

Neptunium-239 has a half-life of 2.35 days.How many days must elapse for a sample of 239Np to decay to 0.100% of its original quantity?

Accepted Answer

A) 0.0427 days 
B) 1.491 days 
C) 2.04 days 
D) 23.4 days 
A) 0.0427 days 
B) 1.491 days 
C) 2.04 days 
D) 23.4 days

Question 7

Which of the following statements is TRUE?

Accepted Answer

A) If the N/Z ratio is too high,there are too many neutrons and the nuclide will convert a neutron to a proton via beta decay. 
B) If the N/Z ratio lies somewhere below 1,the nuclide is stable. 
C) If the N/Z ratio is too low,there are too many neutrons and the nuclide will undergo beta decay. 
D) The valley of stability is the geographic location where many of the known nuclides were first discovered. 
E) All stable nuclei have an N/Z ratio equal to 1. 
A) If the N/Z ratio is too high,there are too many neutrons and the nuclide will convert a neutron to a proton via beta decay. 
B) If the N/Z ratio lies somewhere below 1,the nuclide is stable. 
C) If the N/Z ratio is too low,there are too many neutrons and the nuclide will undergo beta decay. 
D) The valley of stability is the geographic location where many of the known nuclides were first discovered. 
E) All stable nuclei have an N/Z ratio equal to 1.

Question 8

Determine the identity of the daughter nuclide from the electron capture by $ { }_{37}^{81} \mathrm{Rb} $

Accepted Answer

A)  81
36 Kr 
B)  81
38 Sr 
C)  $\begin{array} { l } 
77 \
35
\end{array}$ Br 
D)  $\begin{array} { l } 
85 \
39
\end{array}$ Y 
E)  $\begin{array} { l } 
80 \
36
\end{array}$ Kr 
A)  81
36 Kr 
B)  81
38 Sr 
C)  $\begin{array} { l } 
77 \
35
\end{array}$ Br 
D)  $\begin{array} { l } 
85 \
39
\end{array}$ Y 
E)  $\begin{array} { l } 
80 \
36
\end{array}$ Kr

Question 9

Identify the nuclide that has the longest half-life.

Accepted Answer

A)  $\begin{array} { c } 
235 \
92
\end{array}$ U 
B)  14
6 C 
C)  $\begin{array} { c } 
220 \
86
\end{array}$ Rn 
D)  219
90 Th 
E)  $$232$$
90 Th 
A)  $\begin{array} { c } 
235 \
92
\end{array}$ U 
B)  14
6 C 
C)  $\begin{array} { c } 
220 \
86
\end{array}$ Rn 
D)  219
90 Th 
E)  $$232$$
90 Th

Question 10

Which of the following nuclides are most likely to decay via positron emission?

Accepted Answer

A) Cs-137 
B) I-131 
C) Al-24 
D) K-42 
E) N-14 
A) Cs-137 
B) I-131 
C) Al-24 
D) K-42 
E) N-14

Question 11

Determine how many neutrons are produced during the spontaneous fission of 244
95 Am to form I-134 and Mo-107.

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 12

The following reaction represents what nuclear process? 
214
82 Pb ? $\begin{array} { c } 
0 \
- 1
\end{array}$ e + 214
83 Bi

Accepted Answer

A) alpha emission 
B) gamma emission 
C) electron capture 
D) neutron bombardment 
E) beta emission 
A) alpha emission 
B) gamma emission 
C) electron capture 
D) neutron bombardment 
E) beta emission

Question 13

Determine the identity of the daughter nuclide from the electron capture by $ { }_{4}^{7} \mathrm{Be} $

Accepted Answer

A)  11
6 C 
B)  $\begin{array} { l } 
3 \
2
\end{array}$ He 
C)  8
5 B 
D)  7
3 Li 
E)  7
5 B 
A)  11
6 C 
B)  $\begin{array} { l } 
3 \
2
\end{array}$ He 
C)  8
5 B 
D)  7
3 Li 
E)  7
5 B

Question 14

The following reaction represents what nuclear process? 
$\begin{array} { l } 
2 \
1
\end{array}$ H + $\begin{array} { l } 
2 \
1
\end{array}$ H ? $\begin{array} { l } 
3 \
2
\end{array}$ He + $\begin{array} { l } 
1 \
0
\end{array}$ n

Accepted Answer

A) nuclear fusion 
B) alpha emission 
C) beta emission 
D) nuclear fission 
E) neutron capture 
A) nuclear fusion 
B) alpha emission 
C) beta emission 
D) nuclear fission 
E) neutron capture

Question 15

Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu.The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.

Accepted Answer

A) 0.528 amu 
B) 3.507 amu 
C) 0.564 amu 
D) 1.056 amu 
E) 0.079 amu 
A) 0.528 amu 
B) 3.507 amu 
C) 0.564 amu 
D) 1.056 amu 
E) 0.079 amu

Question 16

Define chain reaction in terms of the fission of uranium nucleus.

Accepted Answer

Neutrons,produced by

Question 17

Give the maximum age that can be estimated from radiocarbon dating.

Accepted Answer

A) 100 000 years 
B) 1 000 000 years 
C) 50 000 years 
D) 5000 years 
E) 10 000 years 
A) 100 000 years 
B) 1 000 000 years 
C) 50 000 years 
D) 5000 years 
E) 10 000 years

Question 18

How does a dosimeter measure exposure to radioactivity?

Accepted Answer

A dosimeter is usually a piece of photog

Question 19

The radioactive decay of ________ is the single greatest source of human exposure to radiation.

Accepted Answer

A) radon 
B) uranium 
C) ozone 
D) carbon 
E) thorium 
A) radon 
B) uranium 
C) ozone 
D) carbon 
E) thorium

Question 20

Determine the binding energy per nucleon of a Mg-24 nucleus.The Mg-24 nucleus has a mass of 24.30506.A proton has a mass of 1.00728 amu,a neutron has a mass of 1.008665 amu,and 1 amu is equivalent to 931 MeV of energy.

Accepted Answer

A) 0.3050 MeV 
B) 8.83 MeV 
C) 0.113 MeV 
D) 106 MeV 
E) 4.41 MeV 
A) 0.3050 MeV 
B) 8.83 MeV 
C) 0.113 MeV 
D) 106 MeV 
E) 4.41 MeV

Exam 19: Radioactivity and Nuclear Chemistry

Determine the identity of the daughter nuclide from the beta decay of 99 43 Tc.

Determine the identity of the daughter nuclide from the alpha decay of 86222{ } _ { 86} ^ { 222 } 86222​ Rn.

Complete the following equation of nuclear transmutation. 238 92 U + 12 6 C ? 244 98 Cf + 6 ________

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second.After 2.00 y.,the activity of the sample declines to 3115 disintegrations per second.The half-life \text { half-life } half-life of curium-243 \text { curium-243 } curium-243 is ---------- y. \text { y. } y.

Calculate the mass defect in Ni-59 if the mass of a Ni-59 nucleus is 58.69344 amu.The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.

Neptunium-239 has a half-life of 2.35 days.How many days must elapse for a sample of 239Np to decay to 0.100% of its original quantity?

Which of the following statements is TRUE?

Determine the identity of the daughter nuclide from the electron capture by 3781Rb { }_{37}^{81} \mathrm{Rb} 3781​Rb

Identify the nuclide that has the longest half-life.

Which of the following nuclides are most likely to decay via positron emission?

Determine how many neutrons are produced during the spontaneous fission of 244 95 Am to form I-134 and Mo-107.

The following reaction represents what nuclear process? 214 82 Pb ? 0 -1 e + 214 83 Bi

Determine the identity of the daughter nuclide from the electron capture by 47Be { }_{4}^{7} \mathrm{Be} 47​Be

The following reaction represents what nuclear process? 2 1 H + 2 1 H ? 3 2 He + 1 0 n

Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu.The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.

Define chain reaction in terms of the fission of uranium nucleus.

Give the maximum age that can be estimated from radiocarbon dating.

How does a dosimeter measure exposure to radioactivity?

The radioactive decay of ________ is the single greatest source of human exposure to radiation.

Determine the binding energy per nucleon of a Mg-24 nucleus.The Mg-24 nucleus has a mass of 24.30506.A proton has a mass of 1.00728 amu,a neutron has a mass of 1.008665 amu,and 1 amu is equivalent to 931 MeV of energy.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding II: Molecular Shapes, valence Bond Theory, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Determine the identity of the daughter nuclide from the alpha decay of ${ } _ { 86} ^ { 222 }$ Rn.

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second.After 2.00 y.,the activity of the sample declines to 3115 disintegrations per second.The $\text { half-life }$ of $\text { curium-243 }$ is ---------- $\text { y. }$

Neptunium-239 has a half-life of 2.35 days.How many days must elapse for a sample of ²³⁹Np to decay to 0.100% of its original quantity?

Determine the identity of the daughter nuclide from the electron capture by ${ }_{37}^{81} \mathrm{Rb}$

Determine the identity of the daughter nuclide from the electron capture by ${ }_{4}^{7} \mathrm{Be}$