Question 1

What type of nuclear reaction is illustrated below?
31H + 21H→42He + 10n

Accepted Answer

A)   Alpha emission
B)   Beta emission
C)   Radioactive decay
D)   Nuclear fission
E)   Nuclear fusion

Question 2

The half-life of Nitrogen - 16 is 7 seconds. How long does it take for 100 mg of Nitrogen - 16 to be reduced tO6.25 mg?

Accepted Answer

A)   1.75 seconds
B)   4 seconds
C)   5 seconds
D)   28 seconds
E)   35 seconds D

Question 3

What is the missing particle in the nuclear equation?
 + ____  +

Accepted Answer

A)   
B)   
C)   
D)   
E)   none of these

Question 4

Phosphorous - 32 has a half-life of 14.3 days. How many days are required for 4.00 grams of phosphorous - 32 to decay to 1.00 gram?

Accepted Answer

A)   1.80 days
B)   16.1 days
C)   28.6 days
D)   42.9 days
E)   57.2 days

Question 5

The mass of an 1H atom is 1.007825 u, and a neutron has a mass of 1.008665 u. The atomic mass of 23Na is 22.9898 u. What is the mass defect of this nuclide in u?

Accepted Answer

A)   0.2003 u
B)   0.1994 u
C)   0.1901 u
D)   0.1892 u
E)   none of these

Question 6

A sample of parchment produces 10.3 disintegrations of 14C per minute per gram of carbon. Estimate the age of the parchment, assuming the original activity was 15.3 disintegrations per minute per gram of carbon. (t1/2 = 5730 years)

Accepted Answer

A)   8.5×103 yr
B)   3.9×103 yr
C)   3.3×103 yr
D)   2.3×103 yr
E)   none of these

Question 7

Which of the following components did Rutherford identify in radioactive decay?

Accepted Answer

A)   "42 a particles"
B)   "0 - 1 b particles"
C)   "00 g rays"
D)   "answer a and b"
E)   "all of these"

Question 8

Consider comparing the two Phosphorous radionuclides given below and their corresponding half-life periods. Which statement below is true?
Isotope Half-life period Phosphorous - 28 0.28 seconds Phosphorous - 32 14.3 days

Accepted Answer

A)   Phosphorous - 28 decays faster and is the most stable nuclide.
B)   Phosphorous - 28 decays faster and is the least stable nuclide.
C)   Phosphorous - 32 decays faster and is the most stable nuclide.
D)   Phosphorous - 32 decays faster and is the least stable nuclide.
E)   They both decay at the same rate but Phosphorous - 28 is more stable.

Question 9

What must be placed in the blank to produce a balanced nuclear equation?
 +  ____ +

Accepted Answer

A)   
B)   
C)   
D)   
E)   none of these

Question 10

Consider the following statements:
I. Control rods are used in a nuclear reactor to adjust the power and prevent the reaction from becoming supercritical.
II. Control rods in a nuclear reactor are made of a material that absorbs neutrons.
III. To obtain energy from a nuclear reactor, the fission reaction must be supercritical. Which of the following choices is correct?

Accepted Answer

A)   only I is true
B)   only II is true
C)   I and III are true, II is false
D)   I and II are true, III is false
E)   I, II, and III are all true

Question 11

The binding energy per nucleon is greatest for:

Accepted Answer

A)   the very light atoms.
B)   the very heavy atoms.
C)   atoms with odd numbers of both neutrons and protons.
D)   the stable isotopes of elements near iron.
E)   none of these

Question 12

In a nuclear reaction, the nuclide 75As absorbs a neutron and emits a gamma ray. The product nucleus is:

Accepted Answer

A)   "76Ge."
B)   "76Se."
C)   "72Ga."
D)   "76As."
E)   "none of these"

Question 13

A sample that contains 5.7×10 - 9 mol of 93Zr decays at a rate of 3.02×103 disintegrations per minute. What is the half-life of 93Zr?
(1 year = 5.256×105 minutes)

Accepted Answer

A)   1.0×106 years
B)   1.5×106 years
C)   2.2×106 years
D)   The half-life cannot be found from this information.
E)   none of these

Question 14

When a nuclide with atomic number = Z and mass number = A undergoes  decay, the product nucleus will have:

Accepted Answer

A)   atomic number = Z, mass number = A
B)   atomic number = Z - 2, mass number = A - 4.
C)   atomic number = Z + 1, mass number = A.
D)   atomic number = Z - 1, mass number = A.
E)   none of these

Question 15

Which form of radioactive decay can penetrate skin?
I. Gamma radiation
II. Beta particles
III. Alpha particles

Accepted Answer

A)   I only
B)   II only
C)   III only
D)   I and II
E)   All of these

Question 16

The type of radioactivity that removes excess energy from the nucleus without changing the atomic number or mass number is called:

Accepted Answer

A)   alpha decay.
B)   beta decay.
C)   gamma decay.
D)   electron capture.
E)   none of these

Question 17

The alpha decay of 231Pa produces:

Accepted Answer

A)   "227Ac."
B)   "229Fr."
C)   "227Np."
D)   "229U."
E)   "none of these"

Question 18

What type of nuclear reaction is illustrated below?
23592U + 10n→13954Xe + 9538Sr + 2 10n

Accepted Answer

A)   Alpha emission
B)   Beta emission
C)   Radioactive decay
D)   Nuclear fission
E)   Nuclear fusion

Question 19

Polonium - 218 undergoes alpha emission. What is the daughter nuclide after polonium - 218 decays?
21486Rn  B)   22288Ra  C)   21482Pb  D)   21885At  E)   21883Bi " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   "21486Rn"
B)   "22288Ra"
C)   "21482Pb"
D)   "21885At"
E)   "21883Bi" C

Question 20

What daughter nuclide results after carbon - 14 undergoes beta decay ?

Accepted Answer

A)   "147N"
B)   "145B"
C)   "156C"
D)   "104Be"
E)   "136C" A

Exam 21: Nuclear Chemistry

What type of nuclear reaction is illustrated below? ³₁H + ²₁H→⁴₂He + ¹₀n

Correct Answer
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The half-life of Nitrogen - 16 is 7 seconds. How long does it take for 100 mg of Nitrogen - 16 to be reduced tO₆.25 mg?

Correct Answer
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D

What is the missing particle in the nuclear equation? + ____ +

Correct Answer
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Phosphorous - 32 has a half-life of 14.3 days. How many days are required for 4.00 grams of phosphorous - 32 to decay to 1.00 gram?

Correct Answer
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The mass of an ¹H atom is 1.007825 u, and a neutron has a mass of 1.008665 u. The atomic mass of ²³Na is 22.9898 u. What is the mass defect of this nuclide in u?

Correct Answer
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A sample of parchment produces 10.3 disintegrations of ¹⁴C per minute per gram of carbon. Estimate the age of the parchment, assuming the original activity was 15.3 disintegrations per minute per gram of carbon. (t_1/2 = 5730 years)

Correct Answer
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Which of the following components did Rutherford identify in radioactive decay?

Correct Answer
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Consider comparing the two Phosphorous radionuclides given below and their corresponding half-life periods. Which statement below is true? Isotope Half-life period Phosphorous - 28 0.28 seconds Phosphorous - 32 14.3 days

Correct Answer
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What must be placed in the blank to produce a balanced nuclear equation? + ____ +

Correct Answer
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The binding energy per nucleon is greatest for:

Correct Answer
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In a nuclear reaction, the nuclide ⁷⁵As absorbs a neutron and emits a gamma ray. The product nucleus is:

Correct Answer
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A sample that contains 5.7×10^{- 9} mol of ⁹³Zr decays at a rate of 3.02×10³ disintegrations per minute. What is the half-life of ⁹³Zr? (1 year = 5.256×10⁵ minutes)

Correct Answer
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When a nuclide with atomic number = Z and mass number = A undergoes decay, the product nucleus will have:

Correct Answer
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Which form of radioactive decay can penetrate skin? I. Gamma radiation II. Beta particles III. Alpha particles

Correct Answer
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The type of radioactivity that removes excess energy from the nucleus without changing the atomic number or mass number is called:

Correct Answer
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The alpha decay of ²³¹Pa produces:

Correct Answer
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What type of nuclear reaction is illustrated below? ²³⁵₉₂U + ¹₀n→¹³⁹₅₄Xe + ⁹⁵₃₈Sr + 2 ¹₀n

Correct Answer
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Polonium - 218 undergoes alpha emission. What is the daughter nuclide after polonium - 218 decays?

Correct Answer
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C

What daughter nuclide results after carbon - 14 undergoes beta decay ?

Correct Answer
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A

Exam 21: Nuclear Chemistry

What type of nuclear reaction is illustrated below? 31H + 21H→42He + 10n

Correct AnswerverifiedShow Answer

The half-life of Nitrogen - 16 is 7 seconds. How long does it take for 100 mg of Nitrogen - 16 to be reduced tO6.25 mg?

Correct AnswerverifiedD

What is the missing particle in the nuclear equation? + ____ +

Correct AnswerverifiedShow Answer

Phosphorous - 32 has a half-life of 14.3 days. How many days are required for 4.00 grams of phosphorous - 32 to decay to 1.00 gram?

Correct AnswerverifiedShow Answer

The mass of an 1H atom is 1.007825 u, and a neutron has a mass of 1.008665 u. The atomic mass of 23Na is 22.9898 u. What is the mass defect of this nuclide in u?

Correct AnswerverifiedShow Answer

A sample of parchment produces 10.3 disintegrations of 14C per minute per gram of carbon. Estimate the age of the parchment, assuming the original activity was 15.3 disintegrations per minute per gram of carbon. (t1/2 = 5730 years)

Correct AnswerverifiedShow Answer

Which of the following components did Rutherford identify in radioactive decay?

Correct AnswerverifiedShow Answer

Consider comparing the two Phosphorous radionuclides given below and their corresponding half-life periods. Which statement below is true? Isotope Half-life period Phosphorous - 28 0.28 seconds Phosphorous - 32 14.3 days

Correct AnswerverifiedShow Answer

What must be placed in the blank to produce a balanced nuclear equation? + ____ +

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The binding energy per nucleon is greatest for:

Correct AnswerverifiedShow Answer

In a nuclear reaction, the nuclide 75As absorbs a neutron and emits a gamma ray. The product nucleus is:

Correct AnswerverifiedShow Answer

A sample that contains 5.7×10 - 9 mol of 93Zr decays at a rate of 3.02×103 disintegrations per minute. What is the half-life of 93Zr? (1 year = 5.256×105 minutes)

Correct AnswerverifiedShow Answer

When a nuclide with atomic number = Z and mass number = A undergoes decay, the product nucleus will have:

Correct AnswerverifiedShow Answer

Which form of radioactive decay can penetrate skin? I. Gamma radiation II. Beta particles III. Alpha particles

Correct AnswerverifiedShow Answer

The type of radioactivity that removes excess energy from the nucleus without changing the atomic number or mass number is called:

Correct AnswerverifiedShow Answer

The alpha decay of 231Pa produces:

Correct AnswerverifiedShow Answer

What type of nuclear reaction is illustrated below? 23592U + 10n→13954Xe + 9538Sr + 2 10n

Correct AnswerverifiedShow Answer

Polonium - 218 undergoes alpha emission. What is the daughter nuclide after polonium - 218 decays?

Correct AnswerverifiedC

What daughter nuclide results after carbon - 14 undergoes beta decay ?

Correct AnswerverifiedA

What type of nuclear reaction is illustrated below? ³₁H + ²₁H→⁴₂He + ¹₀n

Correct Answer
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The half-life of Nitrogen - 16 is 7 seconds. How long does it take for 100 mg of Nitrogen - 16 to be reduced tO₆.25 mg?

Correct Answer
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D

Correct Answer
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Correct Answer
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The mass of an ¹H atom is 1.007825 u, and a neutron has a mass of 1.008665 u. The atomic mass of ²³Na is 22.9898 u. What is the mass defect of this nuclide in u?

Correct Answer
verified

A sample of parchment produces 10.3 disintegrations of ¹⁴C per minute per gram of carbon. Estimate the age of the parchment, assuming the original activity was 15.3 disintegrations per minute per gram of carbon. (t_1/2 = 5730 years)

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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In a nuclear reaction, the nuclide ⁷⁵As absorbs a neutron and emits a gamma ray. The product nucleus is:

Correct Answer
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A sample that contains 5.7×10^{- 9} mol of ⁹³Zr decays at a rate of 3.02×10³ disintegrations per minute. What is the half-life of ⁹³Zr? (1 year = 5.256×10⁵ minutes)

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The alpha decay of ²³¹Pa produces:

Correct Answer
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What type of nuclear reaction is illustrated below? ²³⁵₉₂U + ¹₀n→¹³⁹₅₄Xe + ⁹⁵₃₈Sr + 2 ¹₀n

Correct Answer
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Correct Answer
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C

Correct Answer
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A