Question 1

What noble gas core precedes the valence shell ground state electron configuration for oxygen (O) ?

Accepted Answer

A)   [He]
B)   [Kr]
C)   [Ar]
D)   [Ne]
E)   [Rn]F) A) and C)
G) None of the above

Question 2

Which of the following elements would be expected to have chemical and physical properties most similar to those of the barium (Ba) ?

Accepted Answer

A)   magnesium (Mg) 
B)   argon (Ar) 
C)   aluminum (Al) 
D)   tin (Sn) 
E)   potassium (K) F) C) and E)
G) A) and B)

Question 3

What 2+ ion has the following ground state electron configuration? 2+ B)  Sr2+ C)  Zn2+ D)  Sn2+ E)  None" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   Cd2+
B)   Sr2+
C)   Zn2+
D)   Sn2+
E)   NoneF) B) and E)
G) A) and D)

Question 4

Place the following ions in order from smallest to largest ionic radii: K+,Na+,Mg2+,and Al3+.

Accepted Answer

A)   Al3+ 2+ + +
B)   Na+ 2+ 3+ +
C)   K+ 2+ + 3+
D)   K+ 3+ 2+ +
E)   Mg2+ 3+ + +F) D) and E)
G) B) and D)

Question 5

How many electrons can be described by the following quantum numbers: n = 6,  = 4,  = -4?

Accepted Answer

A)   1
B)   2
C)   6
D)   10
E)   18F) None of the above
G) B) and C)

Question 6

Which of the following electron configurations corresponds to the ground state of an atom of a transition element?

Accepted Answer

A)   1s22s22p3
B)   1s22s22p63s23p63d104s24p1
C)   1s22s22p63s23p63d24s2
D)   1s22s22p63s23p64s2
E)   1s22s22p63s23p4F) B) and C)
G) A) and E)

Question 7

________ rule states that the most stable arrangement of electrons is that which contains the maximum number of unpaired electrons,all with the same spin direction.

Accepted Answer

The answer of ________ rule states that the most stable...

Question 8

A metal oxide forms when strontium reacts with oxygen.What is the most likely formula of this metal oxide?

Accepted Answer

A)   SrO
B)   Sr2O
C)   Sr2O3
D)   SrO2
E)   SrO3F) B) and C)
G) B) and D)

Question 9

Electron ________ is defined as the energy change for a process in which a gas phase atom acquires an electron.

Accepted Answer

affinity

Question 10

Which of the following has the same (total) number of electrons as Kr?

Accepted Answer

A)   
B)   
C)   
D)   
E)   noneF) B) and D)
G) B) and E)

Question 11

Rank the following atoms in order decreasing atomic radii: C,N,B,Al.

Accepted Answer

A)   Al > B > C > N
B)   B > Al > C > N
C)   C > B > Al > N
D)   B > C > N > Al
E)   Al > C > B > NF) A) and E)
G) C) and D)

Question 12

Which of the following ions have the same ground state electron configuration: S2-,N3-,Mg2+,and Br-?

Accepted Answer

A)   N3- and Mg2+
B)   S2-,N3-,and Br-
C)   S2- and Br-
D)   Mg2+ and Br-
E)   S2-,N3-,Mg2+,and Br-F) C) and D)
G) None of the above A

Question 13

The f-block elements are also referred to as the ________ and actinides.

Accepted Answer

lanthanides

Question 14

Which of the following electron configurations is not allowed?

Accepted Answer

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

Question 15

In general,atomic radii

Accepted Answer

A)   decrease down a group and remain constant across a period.
B)   decrease down a group and increase across a period.
C)   increase down a group and increase across a period.
D)   increase down a group and remain constant across a period.
E)   increase down a group and decrease across a period.F) C) and D)
G) B) and C)

Question 16

What is the ground state electron configuration for Cr3+?

Accepted Answer

A)   [Ar]
B)   [Ar]3d74s2
C)   [Ar]3d14s2
D)   [Ar]3d24s1
E)   [Ar]3d3F) C) and D)
G) B) and D)

Question 17

Which elements have no affinity for electrons?

Accepted Answer

A)   transition metals
B)   s-block elements
C)   main group nonmetals
D)   noble gases
E)   semiconductorsF) C) and E)
G) A) and E)

Question 18

A metal nitride forms when sodium reacts with elemental nitrogen.What is the most likely formula of this metal nitride?

Accepted Answer

A)   NaN
B)   Na3N
C)   Na2N3
D)   Na3N2
E)   NaN3F) None of the above
G) A) and B)

Question 19

An atom of which of the following elements has the smallest atomic radius?

Accepted Answer

A)   F
B)   Rb
C)   Ca
D)   Ge
E)   PF) A) and B)
G) A) and C)

Question 20

Explain why the first ionization energy for oxygen is lower than that for nitrogen.

Accepted Answer

Oxygen has a 1s²2s²2p⁴ electron configurati...

Exam 8: The Structure of Atoms and Periodic Trends

What noble gas core precedes the valence shell ground state electron configuration for oxygen (O) ?

Correct AnswerverifiedShow Answer

Which of the following elements would be expected to have chemical and physical properties most similar to those of the barium (Ba) ?

Correct AnswerverifiedShow Answer

What 2+ ion has the following ground state electron configuration?

Correct AnswerverifiedShow Answer

Place the following ions in order from smallest to largest ionic radii: K+,Na+,Mg2+,and Al3+.

Correct AnswerverifiedShow Answer

How many electrons can be described by the following quantum numbers: n = 6, = 4, = -4?

Correct AnswerverifiedShow Answer

Which of the following electron configurations corresponds to the ground state of an atom of a transition element?

Correct AnswerverifiedShow Answer

________ rule states that the most stable arrangement of electrons is that which contains the maximum number of unpaired electrons,all with the same spin direction.

Correct AnswerverifiedShow Answer

A metal oxide forms when strontium reacts with oxygen.What is the most likely formula of this metal oxide?

Correct AnswerverifiedShow Answer

Electron ________ is defined as the energy change for a process in which a gas phase atom acquires an electron.

Correct Answerverifiedaffinity

Which of the following has the same (total) number of electrons as Kr?

Correct AnswerverifiedShow Answer

Rank the following atoms in order decreasing atomic radii: C,N,B,Al.

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Which of the following ions have the same ground state electron configuration: S2-,N3-,Mg2+,and Br-?

Correct AnswerverifiedA

The f-block elements are also referred to as the ________ and actinides.

Correct Answerverifiedlanthanides

Which of the following electron configurations is not allowed?

Correct AnswerverifiedShow Answer

In general,atomic radii

Correct AnswerverifiedShow Answer

What is the ground state electron configuration for Cr3+?

Correct AnswerverifiedShow Answer

Which elements have no affinity for electrons?

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A metal nitride forms when sodium reacts with elemental nitrogen.What is the most likely formula of this metal nitride?

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An atom of which of the following elements has the smallest atomic radius?

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Explain why the first ionization energy for oxygen is lower than that for nitrogen.

Correct AnswerverifiedOxygen has a 1s22s22p4 electron configurati...View AnswerShow Answer

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Place the following ions in order from smallest to largest ionic radii: K⁺,Na⁺,Mg²⁺,and Al³⁺.

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affinity

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Which of the following ions have the same ground state electron configuration: S^2-,N^3-,Mg²⁺,and Br^-?

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A

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lanthanides

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What is the ground state electron configuration for Cr³⁺?

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Oxygen has a 1s²2s²2p⁴ electron configurati...
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