Question 1

Which element would be expected to have properties similar to calcium?

Accepted Answer

A)  Ba
B)  K
C)  Sc
D)  Na
E)  RbF) A) and C)
G) A) and D)

Question 2

Explain how the elements in Group 6A differ from one another.

Accepted Answer

O,S,and Se are nonme...

Question 3

Which of these elements has the greatest metallic character?

Accepted Answer

A)  Br
B)  Se
C)  Ni
D)  As
E)  SiF) C) and D)
G) B) and D)

Question 4

Which of these atoms has the smallest radius?

Accepted Answer

A)  Al
B)  P
C)  As
D)  Te
E)  NaF) D) and E)
G) B) and C)

Question 5

Consider the element with the electron configuration [Kr]5s24d7.This element is

Accepted Answer

A)  a halogen.
B)  a transition metal.
C)  a nonmetal.
D)  an actinide element.
E)  a noble gas.F) C) and D)
G) A) and D)

Question 6

The energy states of atoms containing more than one electron arise from nucleus-electron and electronelectron interactions.Which of the following statements correctly describes these effects?

Accepted Answer

A)  Larger nuclear charge lowers energy; more electrons in an orbital lowers energy.
B)  Larger nuclear charge lowers energy; more electrons in an orbital increases energy.
C)  Smaller nuclear charge lowers energy; more electrons in an orbital lowers energy.
D)  Smaller nuclear charge lowers energy; more electrons in an orbital increases energy.
E)  None of these statements is generally correct.F) A) and E)
G) B) and E)

Question 7

Arrange P,S,and O in order of increasing atomic radius.

Accepted Answer

A)  S 
B)  P 
C)  O 
D)  O 
E)  The answer cannot be determined from the data given.F) C) and D)
G) A) and B)

Question 8

Explain why hydrogen is placed in Group 1A even though it really belongs in a group by itself.

Accepted Answer

Hydrogen is typically placed a...

Question 9

What is the electron configuration for Fr?

Accepted Answer

A)  [Xe]6s1
B)  [Rn]7s1
C)  [Rn]7s2
D)  [Xe]6s2
E)  [Kr]6s1F) A) and C)
G) A) and B)

Question 10

The elements in a column of the periodic table are known as

Accepted Answer

A)  metalloids.
B)  a period.
C)  noble gases.
D)  a group.
E)  nonmetals.F) A) and C)
G) C) and D)

Question 11

Which of these pairs consists of isoelectronic species?

Accepted Answer

A)  Mn2+ and Ar
B)  Zn2+ and Cu2+
C)  Na+ and K+
D)  Cl- and S
E)  K+ and Cl-F) B) and E)
G) A) and C)

Question 12

An aluminum ion,Al3+,has

Accepted Answer

A)  13 protons and 13 electrons.
B)  27 protons and 24 electrons.
C)  16 protons and 13 electrons.
D)  13 protons and 10 electrons.
E)  10 protons and 13 electrons.F) A) and B)
G) A) and C)

Question 13

Which one of the following equations correctly represents the process relating to the ionization energy of X?

Accepted Answer

A)  X(s) → X+(g) + e-
B)  X2(g) → X+(g) + X-(g) 
C)  X(g) + e- → X-(g) 
D)  X-(g) → X(g) + e-
E)  X(g) → X+(g) + e-F) A) and B)
G) A) and C)

Question 14

Which one of these ions is not isoelectronic with Kr?

Accepted Answer

A)  As3+
B)  Se2-
C)  Rb+
D)  Sr2+
E)  Br-F) A) and C)
G) A) and B)

Question 15

In Mendeleev's version of the periodic table,the elements were arranged in order of increasing atomic number.

Accepted Answer

A) True 
 B)False

Question 16

Explain how the elements in Group 4A differ from one another.

Accepted Answer

C is a nonmetal; Si ...

Question 17

Which species have the most similar atomic radii?

Accepted Answer

A)  S2- and Cl-
B)  Ar and As
C)  Rb+ and K+
D)  I- and Br -
E)  Br and CsF) C) and E)
G) A) and B)

Question 18

The general electron configuration for noble gas atoms is

Accepted Answer

A)  ns2np6.
B)  ns2np5.
C)  ns2np4.
D)  ns2np3.
E)  ns2.F) C) and D)
G) B) and E)

Question 19

How does atomic radius change as you move across the periodic table?

Accepted Answer

A)  Atomic radius decreases moving from left to right across a period and increases from top to bottom.
B)  Atomic radius increases moving left to right across a period and decreases from top to bottom.
C)  Smaller nuclear charge lowers energy; more electrons in an orbital lowers energy.
D)  Atomic radius increases diagonally across the periodic table.
E)  None of the answers is correct.F) B) and E)
G) B) and D)

Question 20

Moseley's measurements of nuclear charges of the elements provided the basis for arranging the elements of the periodic table in order of increasing atomic number.

Accepted Answer

A) True 
 B)False

Exam 7: Electron Configuration and the Periodic Table

Explain how the elements in Group 4A differ from one another.

Correct AnswerverifiedC is a nonmetal; Si ...View AnswerShow Answer

Which of these pairs consists of isoelectronic species?

Correct AnswerverifiedShow Answer

Explain why hydrogen is placed in Group 1A even though it really belongs in a group by itself.

Correct AnswerverifiedHydrogen is typically placed a...View AnswerShow Answer

Moseley's measurements of nuclear charges of the elements provided the basis for arranging the elements of the periodic table in order of increasing atomic number.

Correct AnswerverifiedShow Answer

Explain how the elements in Group 6A differ from one another.

Correct AnswerverifiedO,S,and Se are nonme...View AnswerShow Answer

Which of these atoms has the smallest radius?

Correct AnswerverifiedShow Answer

Consider the element with the electron configuration [Kr]5s24d7.This element is

Correct AnswerverifiedShow Answer

Which one of the following equations correctly represents the process relating to the ionization energy of X?

Correct AnswerverifiedShow Answer

The elements in a column of the periodic table are known as

Correct AnswerverifiedShow Answer

How does atomic radius change as you move across the periodic table?

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Arrange P,S,and O in order of increasing atomic radius.

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The energy states of atoms containing more than one electron arise from nucleus-electron and electronelectron interactions.Which of the following statements correctly describes these effects?

Correct AnswerverifiedShow Answer

Which of these elements has the greatest metallic character?

Correct AnswerverifiedShow Answer

In Mendeleev's version of the periodic table,the elements were arranged in order of increasing atomic number.

Correct AnswerverifiedShow Answer

What is the electron configuration for Fr?

Correct AnswerverifiedShow Answer

Which element would be expected to have properties similar to calcium?

Correct AnswerverifiedShow Answer

An aluminum ion,Al3+,has

Correct AnswerverifiedShow Answer

Which species have the most similar atomic radii?

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Which one of these ions is not isoelectronic with Kr?

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The general electron configuration for noble gas atoms is

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C is a nonmetal; Si ...
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Hydrogen is typically placed a...
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O,S,and Se are nonme...
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Consider the element with the electron configuration [Kr]5s²4d⁷.This element is

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An aluminum ion,Al³⁺,has

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