Question 1

Determine the identity of the daughter nuclide from the beta decay of 210
82 Pb.

Accepted Answer

A)  208
78 Pt 
B)  ${ } _ { 81} ^ { 209} $ Tl 
C)  ${ } _ { 80} ^ { 206} $ Hg 
D)  210
83 Bi 
E)  211
82 Pb 
A)  208
78 Pt 
B)  ${ } _ { 81} ^ { 209} $ Tl 
C)  ${ } _ { 80} ^ { 206} $ Hg 
D)  210
83 Bi 
E)  211
82 Pb

Question 2

Which nuclide below is most likely to decay by electron capture?

Accepted Answer

A)  $\begin{array} { c } 
183 \
75
\end{array}$ Re 
B)  $\begin{array} { c } 
185 \
75
\end{array}$ Re 
C)  $\begin{array} { r } 
187 \
75
\end{array}$ Re 
D)  189
75 Re 
A)  $\begin{array} { c } 
183 \
75
\end{array}$ Re 
B)  $\begin{array} { c } 
185 \
75
\end{array}$ Re 
C)  $\begin{array} { r } 
187 \
75
\end{array}$ Re 
D)  189
75 Re

Question 3

What percentage of a radioactive substance remains after 7.00 half-lives have elapsed?

Accepted Answer

A) 0.391% 
B) 0.78% 
C) 1.56% 
D) 3.12% 
A) 0.391% 
B) 0.78% 
C) 1.56% 
D) 3.12%

Question 4

Which of the following nuclides is most likely to undergo beta decay?

Accepted Answer

A)  $\begin{array} { c } 
188 \
78
\end{array}$ Pt 
B)  $\begin{array} { c } 
192 \
78
\end{array}$ Pt 
C)  $\begin{array} { c } 
196 \
78
\end{array}$ Pt 
D)  $\begin{array} { c } 
200 \
78
\end{array}$ Pt 
A)  $\begin{array} { c } 
188 \
78
\end{array}$ Pt 
B)  $\begin{array} { c } 
192 \
78
\end{array}$ Pt 
C)  $\begin{array} { c } 
196 \
78
\end{array}$ Pt 
D)  $\begin{array} { c } 
200 \
78
\end{array}$ Pt

Question 5

What is the mass defect?

Accepted Answer

The mass of a nucleus is less than the s

Question 6

Determine the identity of the daughter nuclide from the alpha decay of 210
84 Po.

Accepted Answer

A)  214
86 Rn 
B)  ${ } _ { 82} ^ { 206} $ Pb 
C)  $\begin{array} { c } 
212 \
88
\end{array}$ Ra 
D)  ${ } _ { 80 } ^ { 208 } $ Hg 
E)  211
85 At 
A)  214
86 Rn 
B)  ${ } _ { 82} ^ { 206} $ Pb 
C)  $\begin{array} { c } 
212 \
88
\end{array}$ Ra 
D)  ${ } _ { 80 } ^ { 208 } $ Hg 
E)  211
85 At

Question 7

Identify the missing particle in the following nuclear equation: 
238
92 U ? ? + 4
2 He + 2 $\begin{array} { l } 
0 \
0
\end{array}$ g

Accepted Answer

A)  238
90 Th 
B)  $\begin{array} { c } 
232 \
88
\end{array}$ Ra 
C)  242
94 Pu 
D)  234
90 Th 
E)  $\begin{array} { c } 
242 \
88
\end{array}$ Ra 
A)  238
90 Th 
B)  $\begin{array} { c } 
232 \
88
\end{array}$ Ra 
C)  242
94 Pu 
D)  234
90 Th 
E)  $\begin{array} { c } 
242 \
88
\end{array}$ Ra

Question 8

Stable isotopes with low atomic numbers have an N/Z ratio of 1.What does that imply?

Accepted Answer

A) The number of neutrons equals the number of protons. 
B) The number of neutrons equals the number of electrons plus protons. 
C) The number of protons equals the number of electrons. 
D) The atomic number equals the atomic mass. 
E) The number of protons equals the number of electrons plus neutrons. 
A) The number of neutrons equals the number of protons. 
B) The number of neutrons equals the number of electrons plus protons. 
C) The number of protons equals the number of electrons. 
D) The atomic number equals the atomic mass. 
E) The number of protons equals the number of electrons plus neutrons.

Determine the identity of the daughter nuclide from the beta decay of 210 82 Pb.

Which nuclide below is most likely to decay by electron capture?

What percentage of a radioactive substance remains after 7.00 half-lives have elapsed?

Which of the following nuclides is most likely to undergo beta decay?

What is the mass defect?

Determine the identity of the daughter nuclide from the alpha decay of 210 84 Po.

Identify the missing particle in the following nuclear equation: 238 92 U ? ? + 4 2 He + 2 0 0 g

Stable isotopes with low atomic numbers have an N/Z ratio of 1.What does that imply?

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

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Exam 19: Radioactivity and Nuclear Chemistry

Determine the identity of the daughter nuclide from the beta decay of 210 82 Pb.

Which nuclide below is most likely to decay by electron capture?

What percentage of a radioactive substance remains after 7.00 half-lives have elapsed?

Which of the following nuclides is most likely to undergo beta decay?

What is the mass defect?

Determine the identity of the daughter nuclide from the alpha decay of 210 84 Po.

Identify the missing particle in the following nuclear equation: 238 92 U ? ? + 4 2 He + 2 0 0 g

Stable isotopes with low atomic numbers have an N/Z ratio of 1.What does that imply?

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