Question 1

Consider the element with the electron configuration [Xe]6s24f7. This element is

Accepted Answer

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

Question 2

Which of the following elements has the smallest first ionization energy?

Accepted Answer

A)   Rb
B)   Mg
C)   I
D)   As
E)   FF) A) and B)
G) C) and D)

Question 3

An element with the electron configuration [noble gas]ns2(n - 1) d10np3 has ________ valence electrons.

Accepted Answer

A)   2
B)   3
C)   5
D)   10
E)   15F) C) and D)
G) B) and D)

Question 4

Which one of these atoms has the largest effective nuclear charge, Zeff?

Accepted Answer

A)   Na
B)   K
C)   Al
D)   Ar
E)   FF) D) and E)
G) B) and D)

Question 5

Which of the following elements has the largest second ionization energy (IE2) ?

Accepted Answer

A)   Li
B)   B
C)   O
D)   F
E)   NaF) C) and D)
G) B) and E)

Question 6

Mendeleev proposed the existence of an unknown element that he called eka-aluminum. This element is now called

Accepted Answer

A)   gallium.
B)   silicon.
C)   magnesium.
D)   boron.
E)   germanium.F) B) and E)
G) A) and E) A

Question 7

Which statement below correctly characterizes nonmetals?

Accepted Answer

A)   They have low electron affinities (so they commonly form anions) .
B)   They have low ionization energies (so they commonly form cations) .
C)   They form ionic compounds with chlorine (metal chlorides) .
D)   They form basic, ionic compounds with oxygen (metal oxides) .
E)   They have high electron affinities (so they commonly form anions) .F) C) and E)
G) B) and C)

Question 8

Arrange these ions in order of increasing ionic radius: K+ , P3- , S2- , Cl-.

Accepted Answer

A)   K+ - 2- 3-
B)   K+ 3- 2- -
C)   P3- 2- - + 
D)   Cl- 2- 3- +
E)   Cl- 2- + 3-F) A) and B)
G) A) and C)

Question 9

Which atom has the smallest atomic radius in the third period of the periodic table?

Accepted Answer

The answer of Which atom has the smallest atomic radius...

Question 10

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

Accepted Answer

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

Question 11

Which of these choices is the electron configuration of the iron(III)  ion?

Accepted Answer

A)   [Ar]3d5
B)   [Ar]4s13d5
C)   [Ar]4s23d3
D)   [Ar]3d6
E)   [Ar]4s23d9F) A) and C)
G) C) and D) A

Question 12

An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group?

Accepted Answer

A)   2A
B)   3A
C)   4A
D)   5A
E)   8AF) A) and B)
G) None of the above

Question 13

What is the correct order of decreasing size of the following ions?

Accepted Answer

A)   P3- > Cl- > K+ > Ca2+
B)   Ca2+ > K+ > Cl- > P3-
C)   K+ > Cl- > Ca2+ > P3- 
D)   K+ > Cl- > P3- > Ca2+
E)   None of these relative size statements is correct.F) A) and D)
G) A) and C)

Question 14

Which of these elements has the highest first ionization energy?

Accepted Answer

A)   Cs
B)   Ga
C)   K
D)   Bi
E)   AsF) All of the above
G) C) and D)

Question 15

Which element in Group 7A has the smallest atomic radius?

Accepted Answer

A)   F
B)   Cl
C)   Br
D)   I
E)   AtF) B) and D)
G) B) and C)

Question 16

Explain what is meant by a diagonal relationship in the periodic table and give an example.

Accepted Answer

A diagonal relationship refers...

Question 17

Which of these choices is the electron configuration for the aluminum ion?

Accepted Answer

A)   1s22s22p63s2
B)   1s22s22p63s23p2
C)   1s22s22p63s23p1 
D)   1s22s22p6
E)   1s22s22p63s23p4F) All of the above
G) A) and C)

Question 18

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

Accepted Answer

A)   Se
B)   Sn
C)   P
D)   As
E)   PbF) A) and B)
G) All of the above

Question 19

Which one of these elements is a transition element?

Accepted Answer

A)   Sr
B)   Pb
C)   As
D)   Fe
E)   HF) A) and D)
G) D) and E)

Question 20

Consider the element with the electron configuration [Kr]5s24d105p5. This element is

Accepted Answer

A)   a halogen.
B)   a transition metal.
C)   an alkali metal.
D)   an actinide element.
E)   a noble gas.F) A) and E)
G) None of the above

Exam 7: Electron Configuration and the Periodic Table

Consider the element with the electron configuration [Xe]6s24f7. This element is

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Which of the following elements has the smallest first ionization energy?

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An element with the electron configuration [noble gas]ns2(n - 1) d10np3 has ________ valence electrons.

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Which one of these atoms has the largest effective nuclear charge, Zeff?

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Which of the following elements has the largest second ionization energy (IE2) ?

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Mendeleev proposed the existence of an unknown element that he called eka-aluminum. This element is now called

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Which statement below correctly characterizes nonmetals?

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Arrange these ions in order of increasing ionic radius: K+ , P3- , S2- , Cl-.

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Which atom has the smallest atomic radius in the third period of the periodic table?

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

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Which of these choices is the electron configuration of the iron(III) ion?

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An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group?

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What is the correct order of decreasing size of the following ions?

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Which of these elements has the highest first ionization energy?

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Which element in Group 7A has the smallest atomic radius?

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Explain what is meant by a diagonal relationship in the periodic table and give an example.

Correct AnswerverifiedA diagonal relationship refers...View AnswerShow Answer

Which of these choices is the electron configuration for the aluminum ion?

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

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Which one of these elements is a transition element?

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Consider the element with the electron configuration [Kr]5s24d105p5. This element is

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Consider the element with the electron configuration [Xe]6s²4f⁷. This element is

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B

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An element with the electron configuration [noble gas]ns²(n - 1) d¹⁰^np³ has ________ valence electrons.

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Which one of these atoms has the largest effective nuclear charge, Z_eff?

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Which of the following elements has the largest second ionization energy (IE₂) ?

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A

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Arrange these ions in order of increasing ionic radius: K⁺ , P^3- , S^2- , Cl^-.

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A

An element with the general electron configuration for its outermost electrons of ns²^np¹ would be in which element group?

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A diagonal relationship refers...
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Consider the element with the electron configuration [Kr]5s²4d¹⁰5p⁵. This element is

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