Question 1

When an unstable Arsenic nucleus undergoes alpha decay, the nucleus formed is that of

Accepted Answer

A)  Arsenic. 
B)  Bromine. 
C)  Germanium. 
D)  Gallium. 
E)  Selenium. 
A)  Arsenic. 
B)  Bromine. 
C)  Germanium. 
D)  Gallium. 
E)  Selenium.

Question 2

A positron is the ______________of an electron.

Accepted Answer

The answer of A positron is the ______________of an electron....

Question 3

The primary function of a moderator in a nuclear reactor is to

Accepted Answer

A)  absorb neutrons. 
B)  cool the fuel rods. 
C)  slow down neutrons. 
D)  transfer heat. 
A)  absorb neutrons. 
B)  cool the fuel rods. 
C)  slow down neutrons. 
D)  transfer heat.

Question 4

What is the symbol for the element whose atoms have 40 electrons each?

Accepted Answer

A)  Ge 
B)  Zr 
C)  Ar 
D)  None of these 
A)  Ge 
B)  Zr 
C)  Ar 
D)  None of these

Question 5

When an oxygen-19 nucleus undergoes beta decay, the nucleus formed is that of

Accepted Answer

A)  nitrogen-18. 
B)  oxygen-18. 
C)  fluorine-19. 
D)  carbon-14. 
A)  nitrogen-18. 
B)  oxygen-18. 
C)  fluorine-19. 
D)  carbon-14.

Question 6

No radionuclides decay by emitting

Accepted Answer

A)  protons. 
B)  alpha particles. 
C)  electrons. 
D)  gamma rays. 
A)  protons. 
B)  alpha particles. 
C)  electrons. 
D)  gamma rays.

Question 7

Isotopes of the element named ______________ probably will be the fuel for the first commercial fusion reactors.

Accepted Answer

The answer of Isotopes of the element named ______________ probably...

Question 8

Oak Ridge, Tennessee, was built to separate

Accepted Answer

A)  235U from 238U. 
B)  14C from 12C. 
C)  2H from 1H. 
D)  239Pu from 238U. 
A)  235U from 238U. 
B)  14C from 12C. 
C)  2H from 1H. 
D)  239Pu from 238U.

Question 9

Plutonium-239 and uranium-235 undergo fission when bombarded by

Accepted Answer

A)  protons. 
B)  neutrons. 
C)  alpha particles. 
D)  electrons. 
A)  protons. 
B)  neutrons. 
C)  alpha particles. 
D)  electrons.

Question 10

How many electrons are there in a neutral atom of   ?

Accepted Answer

A)  26 
B)  30 
C)  82 
D)  56 
A)  26 
B)  30 
C)  82 
D)  56

Question 11

Short-term and long-term effects of radiation on the health of the recipient are called ______________ effects.

Accepted Answer

The answer of Short-term and long-term effects of radiation on...

Question 12

Complete the equation: ______________

Accepted Answer

The answer of Complete the equation: ______________  ...

Question 13

Artificial transmutations are generally achieved using

Accepted Answer

A)  Geiger counters. 
B)  particle accelerators. 
C)  tokamaks. 
D)  mass spectrometers. 
A)  Geiger counters. 
B)  particle accelerators. 
C)  tokamaks. 
D)  mass spectrometers.

Question 14

An electron is symbolized by

Accepted Answer

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

Question 15

Which two isotopes of bromine would you predict to be stable?

Accepted Answer

A)    and   
B)    and   
C)    and   
D)    and   
A)    and   
B)    and   
C)    and   
D)    and

Question 16

When   undergoes beta decay, the daughter is

Accepted Answer

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

Question 17

The half-life of   is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

Accepted Answer

The answer of The half-life of   is 6.0...

Question 18

Complete the equation, and state what type of decay is occurring.   *
     
_____________ + γ

Accepted Answer

Question 19

Who discovered the atomic nucleus in 1911?

Accepted Answer

A)  Marie and Pierre Curie 
B)  Henri Becquerel 
C)  Ernest Rutherford 
D)  Niels Bohr 
A)  Marie and Pierre Curie 
B)  Henri Becquerel 
C)  Ernest Rutherford 
D)  Niels Bohr

Question 20

After two half-lives have gone by, what fraction of the original sample of a radionuclide remains?

Accepted Answer

A)  1/8 
B)  1/4 
C)  1/3 
D)  None of these 
A)  1/8 
B)  1/4 
C)  1/3 
D)  None of these

Exam 10: Nuclear Physics

When an unstable Arsenic nucleus undergoes alpha decay, the nucleus formed is that of

A positron is the ______________of an electron.

The primary function of a moderator in a nuclear reactor is to

What is the symbol for the element whose atoms have 40 electrons each?

When an oxygen-19 nucleus undergoes beta decay, the nucleus formed is that of

No radionuclides decay by emitting

Isotopes of the element named ______________ probably will be the fuel for the first commercial fusion reactors.

Oak Ridge, Tennessee, was built to separate

Plutonium-239 and uranium-235 undergo fission when bombarded by

How many electrons are there in a neutral atom of ?

Short-term and long-term effects of radiation on the health of the recipient are called ______________ effects.

Complete the equation: ______________

Artificial transmutations are generally achieved using

An electron is symbolized by

Which two isotopes of bromine would you predict to be stable?

When undergoes beta decay, the daughter is

The half-life of is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

Complete the equation, and state what type of decay is occurring. * _____________ + γ

Who discovered the atomic nucleus in 1911?

After two half-lives have gone by, what fraction of the original sample of a radionuclide remains?

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The half-life of $The half-life of is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?$ is 6.0 h. What fraction of an original sample of this radionuclide would remain after 30.0 h have elapsed?

Complete the equation, and state what type of decay is occurring. ^* _____________ + γ