Question 1

How many electrons are in a neutral atom of element X?

Accepted Answer

A)  25 
B)  56 
C)  81 
D)  31 
E)  None of the above values is the number of electrons. 
A)  25 
B)  56 
C)  81 
D)  31 
E)  None of the above values is the number of electrons.

Question 2

Which of the method(s) of imaging listed below uses x-rays? I. x-ray
II) magnetic resonance imaging
III) computed tomography

Accepted Answer

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

Question 3

Which element is this?

Accepted Answer

A)  beryllium 
B)  magnesium 
C)  oxygen 
D)  neon 
E)  calcium 
A)  beryllium 
B)  magnesium 
C)  oxygen 
D)  neon 
E)  calcium

Question 4

Which electron shell is lowest in energy?

Accepted Answer

A)  n =1 
B)  n =2 
C)  n =3 
D)  n =4 
E)  All electrons are equal in energy. 
A)  n =1 
B)  n =2 
C)  n =3 
D)  n =4 
E)  All electrons are equal in energy.

Question 5

Which of the following radioisotope would be least likely to be used in a medical application?

Accepted Answer

A)  barium-131 (half-life = 11.6 days) 
B)  iodine-131 (half-life = 8 days) 
C)  technecium-99m (half-life = 6 hours) 
D)  plutonium-239 (half-life = 2.4 F1F1F1S1F1F1F10 104 years) 
E)  fluorine-18 (109 minutes) 
A)  barium-131 (half-life = 11.6 days) 
B)  iodine-131 (half-life = 8 days) 
C)  technecium-99m (half-life = 6 hours) 
D)  plutonium-239 (half-life = 2.4 F1F1F1S1F1F1F10 104 years) 
E)  fluorine-18 (109 minutes)

Question 6

How is an alpha particle different from an atom of helium?

Accepted Answer

A)  It's not different at all. 
B)  It has a different number of protons. 
C)  It has a different number of neutrons. 
D)  It has a different number of electrons. 
E)  It has both a different number of electrons and a different number of protons. 
A)  It's not different at all. 
B)  It has a different number of protons. 
C)  It has a different number of neutrons. 
D)  It has a different number of electrons. 
E)  It has both a different number of electrons and a different number of protons.

Question 7

Which of the following statements about the model of the atom is true?

Accepted Answer

A)  The nucleus is much less dense than the surrounding electrons. 
B)  Electrons orbit the nucleus like planets around the Sun. 
C)  This is the first model of the atom. 
D)  The atom is mostly empty space. 
E)  The model of the atom was developed by looking directly at an atom. 
A)  The nucleus is much less dense than the surrounding electrons. 
B)  Electrons orbit the nucleus like planets around the Sun. 
C)  This is the first model of the atom. 
D)  The atom is mostly empty space. 
E)  The model of the atom was developed by looking directly at an atom.

Question 8

According to the periodic table, how many electron shells do the elements in the third row have?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  It depends on the specific element. 
A)  1 
B)  2 
C)  3 
D)  4 
E)  It depends on the specific element.

Question 9

Which of the following statements best interprets the statement below? The LD50 ?for radiation is an acute dose of 3-4 Sv.

Accepted Answer

A)  Exposure to 50 mg of a radiation source will result in radiation poisoning. 
B)  Exposure to 50 mg of a radiation source will result in death. 
C)  Fifty percent of people exposed to this dose will get sick within one month of the exposure. 
D)  Fifty percent of people exposed to this dose will die within one month of the exposure. 
E)  4 to 6 Sv is the maximum dose that 50% of people can undergo without long term injury. 
A)  Exposure to 50 mg of a radiation source will result in radiation poisoning. 
B)  Exposure to 50 mg of a radiation source will result in death. 
C)  Fifty percent of people exposed to this dose will get sick within one month of the exposure. 
D)  Fifty percent of people exposed to this dose will die within one month of the exposure. 
E)  4 to 6 Sv is the maximum dose that 50% of people can undergo without long term injury.

Question 10

What type of molecules is responsible for an MRI image?

Accepted Answer

A)  calcium in bones 
B)  lipids in cells 
C)  proteins in the body 
D)  water 
E)  air 
A)  calcium in bones 
B)  lipids in cells 
C)  proteins in the body 
D)  water 
E)  air

Question 11

Elements in group 1A of the periodic table are likely to form ions with the charge

Accepted Answer

A)  (F1F1F1S1F1F1F103.) 
B)  (F1F1F1S1F1F1F102.) 
C)  (F1F1F1S1F1F1F101.) 
D)  +1. 
E)  +2. 
A)  (F1F1F1S1F1F1F103.) 
B)  (F1F1F1S1F1F1F102.) 
C)  (F1F1F1S1F1F1F101.) 
D)  +1. 
E)  +2.

Question 12

Which atom has two core electrons and one valence electron?

Accepted Answer

A)  H 
B)  He 
C)  H and He 
D)  Li 
E)  All of the above 
A)  H 
B)  He 
C)  H and He 
D)  Li 
E)  All of the above

Question 13

According to the periodic table, how many valence electrons do the elements in group 7A have?

Accepted Answer

A)  5 
B)  6 
C)  7 
D)  8 
E)  It depends on the specific element. 
A)  5 
B)  6 
C)  7 
D)  8 
E)  It depends on the specific element.

Question 14

In which of the following nuclear reactions is the missing particle released a beta particle?

Accepted Answer

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

Question 15

The product from the alpha decay of radon-222 is

Accepted Answer

A)  polonium-218. 
B)  radium-226. 
C)  polonium-226. 
D)  radium-218. 
E)  lead-220. 
A)  polonium-218. 
B)  radium-226. 
C)  polonium-226. 
D)  radium-218. 
E)  lead-220.

Question 16

Effective dose measurements take into account the ______ of a type of radiation.

Accepted Answer

A)  energy 
B)  penetrating ability 
C)  biological effect 
D)  quantity 
E)  All of the above 
A)  energy 
B)  penetrating ability 
C)  biological effect 
D)  quantity 
E)  All of the above

Question 17

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Accepted Answer

A)  reaction rate. 
B)  kinetics. 
C)  half-life. 
D)  lifetime. 
E)  decay rate. 
A)  reaction rate. 
B)  kinetics. 
C)  half-life. 
D)  lifetime. 
E)  decay rate.

Question 18

Which element would you expect to be the largest?

Accepted Answer

A)  fluorine 
B)  chlorine 
C)  argon 
D)  calcium 
E)  hydrogen 
A)  fluorine 
B)  chlorine 
C)  argon 
D)  calcium 
E)  hydrogen

Question 19

Which of the following diagrams of an atom best represents the scale of the nucleus and electrons?

Accepted Answer

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

Question 20

Which of the following elements forms a cation?

Accepted Answer

A)  carbon 
B)  phosphorous 
C)  krypton 
D)  nickel 
E)  iodine 
A)  carbon 
B)  phosphorous 
C)  krypton 
D)  nickel 
E)  iodine

How many electrons are in a neutral atom of element X?

Which of the method(s) of imaging listed below uses x-rays? I. x-ray II) magnetic resonance imaging III) computed tomography

Which element is this?

Which electron shell is lowest in energy?

Which of the following radioisotope would be least likely to be used in a medical application?

How is an alpha particle different from an atom of helium?

Which of the following statements about the model of the atom is true?

According to the periodic table, how many electron shells do the elements in the third row have?

Which of the following statements best interprets the statement below? The LD₅₀_?for radiation is an acute dose of 3-4 Sv.

What type of molecules is responsible for an MRI image?

Elements in group 1A of the periodic table are likely to form ions with the charge

Which atom has two core electrons and one valence electron?

According to the periodic table, how many valence electrons do the elements in group 7A have?

In which of the following nuclear reactions is the missing particle released a beta particle?

The product from the alpha decay of radon-222 is

Effective dose measurements take into account the ______ of a type of radiation.

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Which element would you expect to be the largest?

Which of the following diagrams of an atom best represents the scale of the nucleus and electrons?

Which of the following elements forms a cation?

Measuring Matter and Energy

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 2: Atomic Structure and Nuclear Radiation

How many electrons are in a neutral atom of element X?

Which of the method(s) of imaging listed below uses x-rays? I. x-ray II) magnetic resonance imaging III) computed tomography

Which element is this?

Which electron shell is lowest in energy?

Which of the following radioisotope would be least likely to be used in a medical application?

How is an alpha particle different from an atom of helium?

Which of the following statements about the model of the atom is true?

According to the periodic table, how many electron shells do the elements in the third row have?

Which of the following statements best interprets the statement below? The LD50 ?for radiation is an acute dose of 3-4 Sv.

What type of molecules is responsible for an MRI image?

Elements in group 1A of the periodic table are likely to form ions with the charge

Which atom has two core electrons and one valence electron?

According to the periodic table, how many valence electrons do the elements in group 7A have?

In which of the following nuclear reactions is the missing particle released a beta particle?

The product from the alpha decay of radon-222 is

Effective dose measurements take into account the ______ of a type of radiation.

The time that it takes a macroscopic sample of a radioisotope to decay to one-half its original activity is known as the

Which element would you expect to be the largest?

Which of the following diagrams of an atom best represents the scale of the nucleus and electrons?

Which of the following elements forms a cation?

Measuring Matter and Energy

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Which of the following statements best interprets the statement below? The LD₅₀_?for radiation is an acute dose of 3-4 Sv.