Question 1

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) B) and C) A

Question 2

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

Accepted Answer

A)   Se
B)   Sn
C)   P
D)   As
E)   PbF) B) and E)
G) A) and B)

Question 3

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) None of the above
G) C) and D) A

Question 4

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) None of the above B

Question 5

Which one of these elements is a transition element?

Accepted Answer

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

Question 6

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 C)
G) B) and C)

Question 7

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

Accepted Answer

A)   1s22s22p63s2
B)   1s22s22p63s23p2
C)   1s22s22p63s23p1 
D)   1s22s22p6
E)   1s22s22p63s23p4F) A) and E)
G) A) and C)

Question 8

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 9

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 E)
G) A) and B)

Question 10

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

Accepted Answer

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

Question 11

Which of these elements has the highest first ionization energy?

Accepted Answer

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

Question 12

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 D)
G) C) and D)

Question 13

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

Accepted Answer

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

Question 14

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) None of the above
G) A) and B)

Question 15

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 E)
G) D) and E)

Question 16

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

Accepted Answer

A)   Na
B)   K
C)   Al
D)   Ar
E)   FF) None of the above
G) A) and C)

Question 17

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) A) and B)
G) B) and E)

Question 18

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) B) and D)
G) B) and C)

Question 19

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

Accepted Answer

A diagonal relationship refers...

Question 20

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) All of the above
G) C) and D)

Exam 7: Electron Configuration and the Periodic Table

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

Correct AnswerverifiedA

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

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

Correct AnswerverifiedA

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

Correct AnswerverifiedB

Which one of these elements is a transition element?

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

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

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

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

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

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Which of these elements has the highest first ionization energy?

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

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

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

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

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

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

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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 statement below correctly characterizes nonmetals?

Correct AnswerverifiedShow Answer

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A

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

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

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

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

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

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

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A diagonal relationship refers...
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