Question 1

The nineteenth century chemists arranged elements in the periodic table according to increasing

Accepted Answer

A)  atomic number.
B)  number of electrons.
C)  atomic mass.
D)  number of neutrons.
E)  nuclear binding energy.F) A) and C)
G) A) and D)

Question 2

Select the element with the most negative electron affinity (i.e.,accepts an electron most readily) .

Accepted Answer

A)  H
B)  Li
C)  C
D)  F
E)  NeF) A) and B)
G) A) and C)

Question 3

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) B

Question 4

Which of these choices is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

Accepted Answer

A)  ns1
B)  ns2
C)  ns2np4
D)  ns2np
E)  ns2np6 (n - 1) d6F) A) and B)
G) A) and C)

Question 5

Which of these atoms has the greatest electron affinity?

Accepted Answer

A)  S
B)  P
C)  Ga
D)  Li
E)  ClF) All of the above
G) B) and D)

Question 6

What elements and groups have properties that are most similar to those of chlorine?

Accepted Answer

A)  F,Br,I,and nonmetals in Group 7A
B)  Cl,K,C,and metals in Group 1B
C)  N,P,As,and lanthanides
D)  He,Ne,Xe,and nonmetals in Group 7A
E)  O,S,and PF) C) and E)
G) A) and B)

Question 7

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) A) and C)

Question 8

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

Accepted Answer

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

Question 9

Elements with the highest first ionization energies are found in the ___________ region of the periodic table.

Accepted Answer

A)  lower left
B)  upper left
C)  center
D)  lower right
E)  upper rightF) B) and C)
G) B) and E)

Question 10

Rank the following elements in order of decreasing atomic radii: Br,Fr,Ca,Ba and As.

Accepted Answer

A)  Fr > Ba > Ca > As > Br
B)  Br > As > Ca > Ba > Fr
C)  Fr > As > Br > Ba > Ca
D)  Fr > Ba > As > Br > Ca
E)  Ca > Ba > Fr > Br > AsF) B) and C)
G) A) and D)

Question 11

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 C)
G) A) and B)

Question 12

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

Question 13

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

Accepted Answer

A)  F
B)  Cl
C)  H
D)  Br
E)  KrF) A) and D)
G) C) and D) E

Question 14

How many valence electrons does a tin (Sn) atom have?

Accepted Answer

A)  2
B)  4
C)  14
D)  36
E)  50F) B) and D)
G) C) and D)

Question 15

The general electron configuration for atoms of all elements in Group 5A is

Accepted Answer

A)  ns2np6.
B)  ns2np5.
C)  ns2np4.
D)  ns2np3.
E)  ns2np1.F) B) and E)
G) A) and E)

Question 16

In what group of the periodic table is the element with the electron configuration [Ar]4s23d104p3?

Accepted Answer

A)  1A
B)  2A
C)  3A
D)  4A
E)  5AF) B) and C)
G) C) and D)

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

Question 18

The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

Accepted Answer

A) True 
 B)False

Question 19

Successive ionization energies,1st,2nd,3rd,etc,provide evidence for the shell structure of the atom.For sulfur atoms,which ionization energy will show an exceptionally large increase over the preceding ionization energy?

Accepted Answer

A)  2nd
B)  3rd
C)  4th
D)  5th
E)  6thF) B) and C)
G) B) and D)

Question 20

Which of the species listed below is not isoelectronic with the others?

Accepted Answer

A)  O-
B)  F-
C)  Mg2+
D)  Na+
E)  N3-F) A) and B)
G) B) and C)

Exam 7: Electron Configuration and the Periodic Table

The nineteenth century chemists arranged elements in the periodic table according to increasing

Correct AnswerverifiedShow Answer

Select the element with the most negative electron affinity (i.e.,accepts an electron most readily) .

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

Which of these choices is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

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Which of these atoms has the greatest electron affinity?

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What elements and groups have properties that are most similar to those of chlorine?

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

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

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Elements with the highest first ionization energies are found in the ___________ region of the periodic table.

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Rank the following elements in order of decreasing atomic radii: Br,Fr,Ca,Ba and As.

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedE

How many valence electrons does a tin (Sn) atom have?

Correct AnswerverifiedShow Answer

The general electron configuration for atoms of all elements in Group 5A is

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In what group of the periodic table is the element with the electron configuration [Ar]4s23d104p3?

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

Correct AnswerverifiedD

The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

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Successive ionization energies,1st,2nd,3rd,etc,provide evidence for the shell structure of the atom.For sulfur atoms,which ionization energy will show an exceptionally large increase over the preceding ionization energy?

Correct AnswerverifiedShow Answer

Which of the species listed below is not isoelectronic with the others?

Correct AnswerverifiedShow Answer

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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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B

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

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E

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In what group of the periodic table is the element with the electron configuration [Ar]4s²3d¹⁰4p³?

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D

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