Question 1

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 2

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

Question 3

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

Question 4

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 D)
G) A) and E)

Question 5

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 6

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

Question 7

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 C)
G) B) and C)

Question 8

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

Accepted Answer

A)  Rb
B)  Mg
C)  I
D)  As
E)  FF) D) and E)
G) None of the above

Question 9

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

Question 10

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

Question 11

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

Question 12

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

Accepted Answer

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

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) A) and B) E

Question 14

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

Question 15

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

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

Question 17

Which of these atoms has the greatest electron affinity?

Accepted Answer

A)  S
B)  P
C)  Ga
D)  Li
E)  ClF) C) and D)
G) B) and C)

Question 18

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

Question 19

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

Accepted Answer

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

Question 20

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

Exam 7: Electron Configuration and the Periodic Table

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

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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 of the following elements has the smallest first ionization energy?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these atoms has the greatest electron affinity?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

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

Correct Answer
verified
B

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified