Question 1

All atoms of a given element have the same ________.

Accepted Answer

A) mass number 
B) number of nucleons 
C) atomic mass 
D) number of neutrons 
E) atomic number 
A) mass number 
B) number of nucleons 
C) atomic mass 
D) number of neutrons 
E) atomic number

Question 2

The missing product in this reaction would be found in which group of the periodic table?

Accepted Answer

A) 1A 
B) 2A 
C) 3A 
D) 8A 
E) 7A 
A) 1A 
B) 2A 
C) 3A 
D) 8A 
E) 7A

Question 3

Alpha decay produces a new nucleus whose ________ than those respectively of the original nucleus.

Accepted Answer

A) atomic number is 2 less and mass number is 2 less 
B) atomic number is 1 less and mass number is 2 less 
C) atomic number is 2 less and mass number is 4 less 
D) atomic number is 2 more and mass number is 4 more 
E) atomic number is 2 more and mass number is 2 less 
A) atomic number is 2 less and mass number is 2 less 
B) atomic number is 1 less and mass number is 2 less 
C) atomic number is 2 less and mass number is 4 less 
D) atomic number is 2 more and mass number is 4 more 
E) atomic number is 2 more and mass number is 2 less

Question 4

What exposure level to radiation is fatal to most humans?

Accepted Answer

A) 100 rem 
B) 200 rem 
C) 600 rem 
D) 300 rem 
E) 1000 rem 
A) 100 rem 
B) 200 rem 
C) 600 rem 
D) 300 rem 
E) 1000 rem

Question 5

Nuclei above the belt of stability can lower their neutron-to-proton ratio by ________.

Accepted Answer

A) beta emission 
B) gamma emission 
C) positron emission 
D) electron capture 
E) Any of the above processes will lower the neutron-to-proton ratio. 
A) beta emission 
B) gamma emission 
C) positron emission 
D) electron capture 
E) Any of the above processes will lower the neutron-to-proton ratio.

Question 6

The half-life of cobalt-60 is 5.20 yr.How many milligrams of a 2.000-mg sample remain after 9.50 years?

Accepted Answer

A) 0.565 
B) 7.03 × 10-22 
C) 7.076 
D) 1.095 
E) 1.435 
A) 0.565 
B) 7.03 × 10-22 
C) 7.076 
D) 1.095 
E) 1.435

Question 7

What is emitted in the nuclear transmutation,

Accepted Answer

A) an alpha particle 
B) a beta particle 
C) a neutron 
D) a proton 
E) a gamma photon 
A) an alpha particle 
B) a beta particle 
C) a neutron 
D) a proton 
E) a gamma photon

Question 8

Bombardment of uranium-238 with a deuteron (hydrogen-2)generates neptunium-237 and ________ neutrons.

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 9

Which one of the following devices converts radioactive emissions to light for detection?

Accepted Answer

A) Geiger counter 
B) photographic film 
C) scintillation counter 
D) radiotracer 
E) none of the above 
A) Geiger counter 
B) photographic film 
C) scintillation counter 
D) radiotracer 
E) none of the above

Question 10

Which of these nuclides is most likely to be radioactive?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 11

Radium undergoes alpha decay.The product of this reaction also undergoes alpha decay.What is the product of this second decay reaction?

Accepted Answer

A) Po 
B) Rn 
C) U 
D) Th 
E) Hg 
A) Po 
B) Rn 
C) U 
D) Th 
E) Hg

Question 12

In what type of radioactive decay does the atomic number of the product increase by one?

Accepted Answer

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

Question 13

In the nuclear transmutation represented by 
 ,what is the emitted particle?

Accepted Answer

A) neutron 
B) proton 
C) positron 
D) alpha particle 
E) electron 
A) neutron 
B) proton 
C) positron 
D) alpha particle 
E) electron

Question 14

What happens in the nucleus of an atom that undergoes positron emission?

Accepted Answer

A proton is converte

Question 15

Due to the nature of the positron,________ is actually detected in positron emission tomography.

Accepted Answer

A) alpha radiation 
B) beta radiation 
C) gamma radiation 
D) x-ray emission 
E) neutron emission 
A) alpha radiation 
B) beta radiation 
C) gamma radiation 
D) x-ray emission 
E) neutron emission

Question 16

I has a half-life of 8.04 days.Assuming you start with a 1.03 mg sample of   I,how many mg will remain after 13.0 days?

Accepted Answer

A) 0.326 
B) 0.268 
C) 0.422 
D) 0.0781 
E) 0.336 
A) 0.326 
B) 0.268 
C) 0.422 
D) 0.0781 
E) 0.336

Question 17

Atoms with the same atomic number and different mass numbers ________.

Accepted Answer

A) do not exist 
B) are isomers 
C) are isotopes 
D) are allotropes 
E) are resonance structures 
A) do not exist 
B) are isomers 
C) are isotopes 
D) are allotropes 
E) are resonance structures

Question 18

The initial element used to make cobalt-60 for cancer radiation therapy is ________.

Accepted Answer

The answer of The initial element used to make cobalt-60...

Exam 21: Nuclear Chemistry

All atoms of a given element have the same ________.

The missing product in this reaction would be found in which group of the periodic table?

Alpha decay produces a new nucleus whose ________ than those respectively of the original nucleus.

What exposure level to radiation is fatal to most humans?

Nuclei above the belt of stability can lower their neutron-to-proton ratio by ________.

The half-life of cobalt-60 is 5.20 yr.How many milligrams of a 2.000-mg sample remain after 9.50 years?

What is emitted in the nuclear transmutation,

Bombardment of uranium-238 with a deuteron (hydrogen-2)generates neptunium-237 and ________ neutrons.

Which one of the following devices converts radioactive emissions to light for detection?

Which of these nuclides is most likely to be radioactive?

Radium undergoes alpha decay.The product of this reaction also undergoes alpha decay.What is the product of this second decay reaction?

In what type of radioactive decay does the atomic number of the product increase by one?

In the nuclear transmutation represented by ,what is the emitted particle?

What happens in the nucleus of an atom that undergoes positron emission?

Due to the nature of the positron,________ is actually detected in positron emission tomography.

I has a half-life of 8.04 days.Assuming you start with a 1.03 mg sample of I,how many mg will remain after 13.0 days?

Atoms with the same atomic number and different mass numbers ________.

The initial element used to make cobalt-60 for cancer radiation therapy is ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

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