Question 1

Which of the following statements is correct for

Accepted Answer

A)   atomic number = 27 and mass number = 14
B)   contains 14 protons and 27 neutrons
C)   contains an equal number of protons and electrons
D)   more than one correct response
E)   no correct responseF) None of the above
G) A) and C)

Question 2

Which of the following elements is an inner-transition element?

Accepted Answer

A)   (9F) 
B)   (50Sn) 
C)   (79Au) 
D)   (92U) E) A) and C)
F) All of the above

Question 3

Which of the following element classification pairings is incorrect?

Accepted Answer

A)   O representative element
B)   Xe noble gas element
C)   Cr transition element
D)   Os inner transition elementE) B) and C)
F) C) and D)

Question 4

Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1)  The number of elements that are metals and nonmetals is approximately equal.
(2)  The number of orbitals present in an electron subshell is always six.
(3)  An atom as a whole is electrically neutral because all charged subatomic particles reside in the nucleus.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) None of the above
F) All of the above

Question 5

The nuclear charge for an atom of  is

Accepted Answer

A)   zero
B)   + 9
C)   + 18
D)   + 28E) C) and D)
F) B) and D)

Question 6

Which of the following statements concerning the nucleus of an atom is correct?

Accepted Answer

A)   It accounts for almost all of the mass of an atom.
B)   It is always positively charged.
C)   It contains only neutrons.
D)   More than one correct response.
E)   No correct response.F) A) and D)
G) A) and C)

Question 7

Choose the appropriate pair of atoms that contain the same number of protons.

Accepted Answer

A)   
B)   
C)   
D)   E) C) and D)
F) A) and D)

Question 8

Isotopes of a given element

Accepted Answer

A)   have the same mass number but different numbers of protons
B)   have different mass numbers but identical numbers of protons
C)   have the same atomic number but different chemical properties
D)   have the same mass number but different chemical propertiesE) A) and D)
F) A) and B)

Question 9

Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1)  The shape of an s orbital is always spherical.
(2)  All naturally occurring atoms of an element must be identical to each other in terms of subatomic particle makeup.
(3)  The alkaline earth metals are the elements in group IA of the periodic table.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) A) and B)
F) None of the above

Question 10

In which of the following pairs of elements are both members of the pair metals?

Accepted Answer

A)   P and O
B)   Al and Cl
C)   Nb and Ar
D)   Ag and BiE) B) and C)
F) C) and D)

Question 11

Choose the appropriate electron configuration for an element that has two unpaired electrons.

Accepted Answer

A)   1s22s22p63s23p6
B)   1s22s22p63s23p4
C)   1s22s22p63s1
D)   1s22s22p5E) None of the above
F) B) and C)

Question 12

Which of the following electron configurations corresponds to an element in the same group of the periodic table as the element whose electron configuration is 1s22s22p5?

Accepted Answer

A)   1s22s22p4
B)   1s22s22p6
C)   1s22s22p63s23p64s23d5
D)   more than one correct response
E)   no correct responseF) C) and E)
G) B) and C)

Question 13

Chlorine, which exists in nature in two isotopic forms, has an atomic mass of 35.5 amu. This means that:

Accepted Answer

A)   All chlorine atoms have masses of 35.5 amu.
B)   More than half of all chlorine atoms have masses of 35.5.
C)   35.5 amu is the upper limit for the mass of a chlorine atom.
D)   The mass of one isotope must be lighter than 35.5 amu while the mass of the other isotope is heavier than 35.5 amu.E) B) and C)
F) None of the above

Question 14

Choose the correct atom that has a mass number of 17.

Accepted Answer

A)   
B)   
C)   
D)   E) None of the above
F) A) and B)

Question 15

Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1)  Most of the mass of an atom is concentrated in its nucleus.
(2)  Sufficient information is present on a "standard" periodic table to determine the number of neutrons present in atoms of an element.
(3)  An atom whose electron configuration is 1s22s22p63s1 contains 12 electrons.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) A) and D)
F) B) and C)

Question 16

Period number and group number in the periodic table are numerically equal for which of the following elements?

Accepted Answer

A)   (13Al) 
B)   (33As) 
C)   (51Sb) 
D)   more than one correct response
E)   no correct responseF) B) and D)
G) None of the above

Question 17

Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1)  The maximum number of electrons that can occupy an electron shell is the same as the shell number.
(2)  A nucleus is the very small dense uncharged center of an atom.
(3)  The number of inner transition elements is greater than the number of transition elements.

Accepted Answer

A)   All three statements are true.
B)   Two of the three statements are true.
C)   Only one of the statements is true.
D)   None of the statements is true.E) B) and C)
F) A) and B)

Question 18

Which of the following elements is a transition element?

Accepted Answer

A)   (9F) 
B)   (50Sn) 
C)   (79Au) 
D)   (92U) E) A) and C)
F) None of the above

Question 19

Which of the following statements about a d subshell is correct?

Accepted Answer

A)   It is found only in shells greater than 2.
B)   It contains 3 orbitals.
C)   It is found only in shells 2 and 3.
D)   It is found in all shells greater than 1.E) All of the above
F) B) and C)

Question 20

After the 4s subshell of an atom is filled with electrons, the next electron added will enter the

Accepted Answer

A)   3d subshell
B)   4p subshell
C)   4d subshell
D)   5s subshellE) C) and D)
F) All of the above

Exam 3: Atomic Structure and the Periodic Table

In which of the following pairs of elements are both members of the pair metals?

Correct Answer
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Isotopes of a given element

Correct Answer
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Which of the following statements concerning the nucleus of an atom is correct?

Correct Answer
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Which of the following statements about a d subshell is correct?

Correct Answer
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Which of the following elements is a transition element?

Correct Answer
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Correct Answer
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The nuclear charge for an atom of is

Correct Answer
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Choose the appropriate electron configuration for an element that has two unpaired electrons.

Correct Answer
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Correct Answer
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Which of the following electron configurations corresponds to an element in the same group of the periodic table as the element whose electron configuration is 1s²2s²2p⁵?

Correct Answer
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After the 4s subshell of an atom is filled with electrons, the next electron added will enter the

Correct Answer
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Correct Answer
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Choose the appropriate pair of atoms that contain the same number of protons.

Correct Answer
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Chlorine, which exists in nature in two isotopic forms, has an atomic mass of 35.5 amu. This means that:

Correct Answer
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Which of the following element classification pairings is incorrect?

Correct Answer
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Which of the following elements is an inner-transition element?

Correct Answer
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Which of the following statements is correct for

Correct Answer
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Choose the correct atom that has a mass number of 17.

Correct Answer
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Period number and group number in the periodic table are numerically equal for which of the following elements?

Correct Answer
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Exam 3: Atomic Structure and the Periodic Table

In which of the following pairs of elements are both members of the pair metals?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Isotopes of a given element

Correct AnswerverifiedShow Answer

Which of the following statements concerning the nucleus of an atom is correct?

Correct AnswerverifiedShow Answer

Which of the following statements about a d subshell is correct?

Correct AnswerverifiedShow Answer

Which of the following elements is a transition element?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The nuclear charge for an atom of is

Correct AnswerverifiedShow Answer

Choose the appropriate electron configuration for an element that has two unpaired electrons.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following electron configurations corresponds to an element in the same group of the periodic table as the element whose electron configuration is 1s22s22p5?

Correct AnswerverifiedShow Answer

After the 4s subshell of an atom is filled with electrons, the next electron added will enter the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Choose the appropriate pair of atoms that contain the same number of protons.

Correct AnswerverifiedShow Answer

Chlorine, which exists in nature in two isotopic forms, has an atomic mass of 35.5 amu. This means that:

Correct AnswerverifiedShow Answer

Which of the following element classification pairings is incorrect?

Correct AnswerverifiedShow Answer

Which of the following elements is an inner-transition element?

Correct AnswerverifiedShow Answer

Which of the following statements is correct for

Correct AnswerverifiedShow Answer

Choose the correct atom that has a mass number of 17.

Correct AnswerverifiedShow Answer

Period number and group number in the periodic table are numerically equal for which of the following elements?

Correct AnswerverifiedShow Answer

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Which of the following electron configurations corresponds to an element in the same group of the periodic table as the element whose electron configuration is 1s²2s²2p⁵?

Correct Answer
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