Question 1

Which of the following nuclides is most likely to be stable?

Accepted Answer

A)    Pb 
B)    Bi 
C)    Tl 
D)    Na 
A)    Pb 
B)    Bi 
C)    Tl 
D)    Na

Question 2

If we start with 1.000 g of strontium-90,0.908 g will remain after 4.00 y.This means that the half-life Of strontium-90 is ________ y.

Accepted Answer

A) 3.05 
B) 4.40 
C) 28.7 
D) 3.63 
E) 41.6 
A) 3.05 
B) 4.40 
C) 28.7 
D) 3.63 
E) 41.6

Question 3

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay.
197Au

Accepted Answer

A) radioactive,beta 
B) radioactive,fission 
C) radioactive,alpha 
D) radioactive,neutron 
E) stable 
A) radioactive,beta 
B) radioactive,fission 
C) radioactive,alpha 
D) radioactive,neutron 
E) stable

Question 4

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay.
212Po

Accepted Answer

A) radioactive,beta 
B) radioactive,fission 
C) radioactive,alpha 
D) radioactive,neutron 
E) stable 
A) radioactive,beta 
B) radioactive,fission 
C) radioactive,alpha 
D) radioactive,neutron 
E) stable

Question 5

Approximately what mass of a 1.00 mg sample of 131I remains after 40.2 days? The half-life of 131I is 8.04 d.

Accepted Answer

A) 0.0313 mg 
B) 0.200 mg 
C) 0.0249 mg 
D) 0.0156 mg 
A) 0.0313 mg 
B) 0.200 mg 
C) 0.0249 mg 
D) 0.0156 mg

Question 6

When a nuclide undergoes positron emission,the change in the number of protons,neutrons,and mass number is,respectively:

Accepted Answer

A) -1,+1,no change 
B) +1,-1,no change 
C) -1,+1,-1 
D) +1,+1,-1 
A) -1,+1,no change 
B) +1,-1,no change 
C) -1,+1,-1 
D) +1,+1,-1

Question 7

Radiation can be detected as it interacts with matter by the use of:
I.photographic film
II.a bubble chamber
III.Geiger-M  
Ller counter

Accepted Answer

A) I,II,III 
B) I and II 
C) I and III 
D) II and III 
E) III only 
A) I,II,III 
B) I and II 
C) I and III 
D) II and III 
E) III only

Question 8

What is the binding energy,in amu,of 13C? Masses are: proton = 1.00728 amu,neutron = 1.00867 amu,electron = 0.00055 amu,and 13C = 13.00335 amu.

Accepted Answer

A) 0.10432 amu 
B) 0.0102 amu 
C) 0.10487 amu 
D) 0.10817 amu 
E) 0.00335 amu 
A) 0.10432 amu 
B) 0.0102 amu 
C) 0.10487 amu 
D) 0.10817 amu 
E) 0.00335 amu

Question 9

The type of radioactive emission with the greatest penetrating power is ________.

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) positron 
E) neutrino 
A) alpha 
B) beta 
C) gamma 
D) positron 
E) neutrino

Question 10

A newly synthesized element is found to have a half-life of 3.82 minutes.How long after its formation will the activity be only 10% of original activity?

Accepted Answer

A) 12.1 min 
B) 6.03 min 
C) 0.603 min 
D) 12.7 min 
E) 1.27 min 
A) 12.1 min 
B) 6.03 min 
C) 0.603 min 
D) 12.7 min 
E) 1.27 min

Question 11

The number of nucleons in a   Co nucleus is:

Accepted Answer

A) 27 
B) 33 
C) 60 
D) 87 
A) 27 
B) 33 
C) 60 
D) 87

Question 12

Choose the INCORRECT statement.

Accepted Answer

A) Radioactivity is the emission of ionizing radiation. 
B) An alpha particle is the nucleus of a helium-4 atom. 
C) A beta particle is a neutron. 
D) A positron is like a beta particle but with a positive charge. 
E) Gamma rays are emitted from a nucleus in an excited state. 
A) Radioactivity is the emission of ionizing radiation. 
B) An alpha particle is the nucleus of a helium-4 atom. 
C) A beta particle is a neutron. 
D) A positron is like a beta particle but with a positive charge. 
E) Gamma rays are emitted from a nucleus in an excited state.

Question 13

The masses of   He,   Li and   B are 4.0015,6.0135 and 10.0102 amu,respectively.Splitting a boron-10 nucleus to helium-4 and lithium-6 would:

Accepted Answer

A) absorb energy 
B) evolve energy 
C) result in no energy change 
D) boron cannot be split 
E) cannot be determined 
A) absorb energy 
B) evolve energy 
C) result in no energy change 
D) boron cannot be split 
E) cannot be determined

Question 14

Which of the following statements concerning alpha decay is INCORRECT?

Accepted Answer

A) It involves nuclides with atomic number larger than 83 and mass number larger than 200. 
B) It has great penetrating power,but little ionizing power. 
C) It often leaves the nucleus in an excited state. 
D) The atomic number decreases by two. 
E) The alpha particle is made up of two protons and two neutrons. 
A) It involves nuclides with atomic number larger than 83 and mass number larger than 200. 
B) It has great penetrating power,but little ionizing power. 
C) It often leaves the nucleus in an excited state. 
D) The atomic number decreases by two. 
E) The alpha particle is made up of two protons and two neutrons.

Question 15

Which of the following types of nuclear decay result in a decrease in nuclear charge?
I.gamma emission
II.beta emission
III.positron emission
IV.electron-capture

Accepted Answer

A) I and II 
B) II and IV 
C) I and III 
D) III and IV 
E) IV only 
A) I and II 
B) II and IV 
C) I and III 
D) III and IV 
E) IV only

Question 16

Fill in the blank in the following nuclear reaction.
   P → ________ +     β

Accepted Answer

Question 17

Beta decay of 60Co produces a beta particle and:

Accepted Answer

A) (56Mn) 
B) (59Co) 
C) (60Fe) 
D) (60Ni) 
A) (56Mn) 
B) (59Co) 
C) (60Fe) 
D) (60Ni)

Question 18

Choose the INCORRECT statement.

Accepted Answer

A) The nuclear binding energy is the mass changed to energy that holds the nucleus together. 
B) Magic numbers are certain numbers of protons and/or neutrons which are especially stable. 
C) Even numbers of protons and neutrons are more stable. 
D) Particular ratios of neutrons to protons are more stable. 
E) All isotopes below Bi are stable. 
A) The nuclear binding energy is the mass changed to energy that holds the nucleus together. 
B) Magic numbers are certain numbers of protons and/or neutrons which are especially stable. 
C) Even numbers of protons and neutrons are more stable. 
D) Particular ratios of neutrons to protons are more stable. 
E) All isotopes below Bi are stable.

Question 19

The most ionizing radiation is of what type?

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) electron 
E) neutron 
A) alpha 
B) beta 
C) gamma 
D) electron 
E) neutron

Question 20

A certain radioactive series starts with   U and ends with   Pb.In the overall process,________ alpha particles and ________ beta particles are emitted.

Accepted Answer

A) 7,5 
B) 7,4 
C) 8,6 
D) 8,7 
E) 8,3 
A) 7,5 
B) 7,4 
C) 8,6 
D) 8,7 
E) 8,3

Exam 25: Nuclear Chemistry

Which of the following nuclides is most likely to be stable?

If we start with 1.000 g of strontium-90,0.908 g will remain after 4.00 y.This means that the half-life Of strontium-90 is ________ y.

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay. 197Au

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay. 212Po

Approximately what mass of a 1.00 mg sample of 131I remains after 40.2 days? The half-life of 131I is 8.04 d.

When a nuclide undergoes positron emission,the change in the number of protons,neutrons,and mass number is,respectively:

Radiation can be detected as it interacts with matter by the use of: I.photographic film II.a bubble chamber III.Geiger-M Ller counter

What is the binding energy,in amu,of 13C? Masses are: proton = 1.00728 amu,neutron = 1.00867 amu,electron = 0.00055 amu,and 13C = 13.00335 amu.

The type of radioactive emission with the greatest penetrating power is ________.

A newly synthesized element is found to have a half-life of 3.82 minutes.How long after its formation will the activity be only 10% of original activity?

The number of nucleons in a Co nucleus is:

Choose the INCORRECT statement.

The masses of He, Li and B are 4.0015,6.0135 and 10.0102 amu,respectively.Splitting a boron-10 nucleus to helium-4 and lithium-6 would:

Which of the following statements concerning alpha decay is INCORRECT?

Which of the following types of nuclear decay result in a decrease in nuclear charge? I.gamma emission II.beta emission III.positron emission IV.electron-capture

Fill in the blank in the following nuclear reaction. P → ________ + β

Beta decay of 60Co produces a beta particle and:

Choose the INCORRECT statement.

The most ionizing radiation is of what type?

A certain radioactive series starts with U and ends with Pb.In the overall process,________ alpha particles and ________ beta particles are emitted.

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay. ¹⁹⁷Au

Choose the correct word to describe the nuclear stability of the following isotope.If it is radioactive,choose the most likely mode of decay. ²¹²Po

Approximately what mass of a 1.00 mg sample of ¹³¹I remains after 40.2 days? The half-life of ¹³¹I is 8.04 d.

What is the binding energy,in amu,of ¹³C? Masses are: proton = 1.00728 amu,neutron = 1.00867 amu,electron = 0.00055 amu,and ¹³C = 13.00335 amu.

The number of nucleons in a Conucleusis:

Fill in the blank in the following nuclear reaction. ^P^→^{________ +} ^β

Beta decay of ⁶⁰Co produces a beta particle and:

A certain radioactive series starts with U and ends with Pb.In the overall process, alpha particles and beta particles are emitted.