Question 1

Which group of the periodic table of elements forms only 2+ ions?

Accepted Answer

A)   group 1A
B)   group 2A
C)   group 1B
D)   group 7A
E)   group 8AF) D) and E)
G) A) and D)

Question 2

Which ground-state electron configuration is incorrect?

Accepted Answer

A)   Br: [Ar]3d104s24p5
B)   K: [Ar]4s1
C)   Ni: [Ar]3d5
D)   Mg: 1s22s22p63s2
E)   Co: [Ar]3d74s2F) C) and D)
G) A) and D)

Question 3

What is the ground state electron configuration for Sn2+?

Accepted Answer

A)   [Kr]4d105s2
B)   [Kr]4d105p2
C)   [Kr]5s2
D)   [Kr]4d105s25p2
E)   [Kr]4d105s25p4F) C) and D)
G) A) and E)

Question 4

Explain the difference between paramagnetic and ferromagnetic materials.

Accepted Answer

Elements with unpaired electrons are par...

Question 5

For which of the following atoms is the 2+ ion diamagnetic in the ground state?

Accepted Answer

A)   Ni
B)   Fe
C)   Zn
D)   Mn
E)   CuF) B) and C)
G) A) and E)

Question 6

In the context of magnetism,Cu2+ is _____.

Accepted Answer

A)   diamagnetic
B)   paramagnetic
C)   ferromagnetic
D)   ferrimagnetic
E)   antiferromagneticF) B) and D)
G) All of the above

Question 7

What is the maximum number of electrons that can occupy one s orbital?

Accepted Answer

A)   1
B)   2
C)   6
D)   10
E)   14F) A) and E)
G) All of the above

Question 8

Which of the following equations corresponds to the second ionization of magnesium?

Accepted Answer

A)   Mg(g) → Mg+(g) + e-.
B)   Mg(g) → Mg+(g) + e-..
C)   Mg(g) → Mg+(g) + e-
D)   Mg(g) → Mg2+(g) + 2e-
E)   Mg(g) + e- → Mg-(g) F) D) and E)
G) B) and D)

Question 9

An atom of which of the following elements has the smallest ionization energy?

Accepted Answer

A)   At
B)   Bi
C)   Pb
D)   Cs
E)   PoF) A) and D)
G) C) and D)

Question 10

How many valence electrons does an arsenic atom have?

Accepted Answer

A)   5
B)   8
C)   7
D)   2
E)   33F) A) and C)
G) C) and D)

Question 11

If the ground state electron configuration of an element is [Ar]3d104s24p5,what is the typical charge on the monatomic anion of the element?

Accepted Answer

A)   4+
B)   2+
C)   1-
D)   2-
E)   3-F) A) and B)
G) A) and C)

Question 12

Electrons with opposing spins are attracted to each other.

Accepted Answer

A)   1 only
B)   2 only
C)   3 only
D)   1 and 2
E)   1,2,and 3F) A) and E)
G) B) and D)

Question 13

What is the maximum number of electrons that can occupy the n = 3 shell?

Accepted Answer

A)   2
B)   8
C)   18
D)   32
E)   50F) All of the above
G) A) and D)

Question 14

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

Accepted Answer

Oxygen has a 1s²2s²2p⁴ electron configurati...

Question 15

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) A) and B)
G) B) and D)

Question 16

Which of the following statements is true concerning the electron configuration [Xe]6p2?

Accepted Answer

A)   This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Pauli exclusion principle.
B)   This configuration cannot be the ground-state electron configuration for a Ba atom because it violates Hund's rule.
C)   This configuration is the ground-state electron configuration for a Ba atom.
D)   This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Heisenberg uncertainty principle.
E)   This configuration cannot be the ground-state electron configuration for a Ba atom because it violates the Aufbau principle.F) B) and C)
G) A) and B)

Question 17

The change in energy for which of the following processes corresponds to the first ionization energy of beryllium?

Accepted Answer

A)   Be(g) → Be+(g) + e-
B)   Be(s) → Be+(s) + e-
C)   Be(s) → Be+(g) + e-
D)   Be(g) → Be2+(g) + 2e-
E)   Be(s) + e- → Be-(s) F) B) and C)
G) A) and E)

Question 18

Which of the following elements would be expected to have chemical and physical properties most similar to Iodine (I) ?

Accepted Answer

A)   Fluorine (F) 
B)   Aluminum (Al) 
C)   Magnesium (Mg) 
D)   Rubidium (Rb) 
E)   Krypton (Kr) F) All of the above
G) C) and D)

Question 19

Which of the following groups is a part of the s-block elements?

Accepted Answer

A)   Group 2A
B)   Group 6A
C)   Group 8A
D)   Group 7A
E)   Group 5AF) A) and E)
G) A) and D)

Question 20

Which of the following statements is true of atomic radii?

Accepted Answer

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

Exam 8: The Structure of Atoms and Periodic Trends

Which ground-state electron configuration is incorrect?

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Which of the following elements would be expected to have chemical and physical properties most similar to Iodine (I) ?

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Which of the following equations corresponds to the second ionization of magnesium?

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Which of the following statements is true concerning the electron configuration [Xe]6p2?

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Explain the difference between paramagnetic and ferromagnetic materials.

Correct AnswerverifiedElements with unpaired electrons are par...View AnswerShow Answer

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

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How many valence electrons does an arsenic atom have?

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If the ground state electron configuration of an element is [Ar]3d104s24p5,what is the typical charge on the monatomic anion of the element?

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Which of the following statements is true of atomic radii?

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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

What is the maximum number of electrons that can occupy the n = 3 shell?

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What is the ground state electron configuration for Sn2+?

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Which group of the periodic table of elements forms only 2+ ions?

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For which of the following atoms is the 2+ ion diamagnetic in the ground state?

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What is the maximum number of electrons that can occupy one s orbital?

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In the context of magnetism,Cu2+ is _____.

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Electrons with opposing spins are attracted to each other.

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The change in energy for which of the following processes corresponds to the first ionization energy of beryllium?

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Which of the following groups is a part of the s-block elements?

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An atom of which of the following elements has the smallest ionization energy?

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Which of the following statements is true concerning the electron configuration [Xe]6p²?

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Elements with unpaired electrons are par...
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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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If the ground state electron configuration of an element is [Ar]3d¹⁰4s²4p⁵,what is the typical charge on the monatomic anion of the element?

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Oxygen has a 1s²2s²2p⁴ electron configurati...
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What is the ground state electron configuration for Sn²⁺?

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In the context of magnetism,Cu²⁺ is _____.

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