Question 1

A is the sequence Na,Mg,Al,Si,and P.B is the sequence He,Ne,Ar,Kr,and Xe.Which statement below is true?

Accepted Answer

A) The members of A are decreasing in size. 
B) The members of B have larger radii than those of A,respectively.That is He > Na,Ne > Mg,etc. 
C) The members of A have larger radii than those of B,respectively. 
D) The members of B are decreasing in size. 
E) All the members of A are isoelectronic. 
A) The members of A are decreasing in size. 
B) The members of B have larger radii than those of A,respectively.That is He > Na,Ne > Mg,etc. 
C) The members of A have larger radii than those of B,respectively. 
D) The members of B are decreasing in size. 
E) All the members of A are isoelectronic. A

Question 2

Among the alkali metals,cesium reacts more rapidly than sodium because:

Accepted Answer

A) cesium has more electrons 
B) cesium has more neutrons 
C) the valence electron of cesium is at a greater average distance from the nucleus 
D) cesium has a higher atomic weight 
E) cesium has more protons 
A) cesium has more electrons 
B) cesium has more neutrons 
C) the valence electron of cesium is at a greater average distance from the nucleus 
D) cesium has a higher atomic weight 
E) cesium has more protons C

Question 3

What is the ground state electron configuration for iron(III)?

Accepted Answer

A) [Ar]3d5  
B) [Ar]4s23d3  
C) [Ar]4s13d4  
D) [Ar]4s24p3  
E) [Ar]4p5  
A) [Ar]3d5  
B) [Ar]4s23d3  
C) [Ar]4s13d4  
D) [Ar]4s24p3  
E) [Ar]4p5  A

Question 4

Which ionization process requires the most energy?

Accepted Answer

A) W(g)→ W+(g)+ e- 
B) W+(g)→ W2+(g)+ e- 
C) W2+(g)→ W3+(g)+ e- 
D) W3+(g)→ W4+(g)+ e- 
A) W(g)→ W+(g)+ e- 
B) W+(g)→ W2+(g)+ e- 
C) W2+(g)→ W3+(g)+ e- 
D) W3+(g)→ W4+(g)+ e-

Question 5

Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium?

Accepted Answer

A) [Kr]5s15p1 → [Kr]5s1 + e- 
B) [Kr]5s2 → [Kr]5s15p1 
C) [Kr]5s2 → [Kr]5s1 + e- 
D) [Kr]5s2 + e- → [Kr]5s25p1 
A) [Kr]5s15p1 → [Kr]5s1 + e- 
B) [Kr]5s2 → [Kr]5s15p1 
C) [Kr]5s2 → [Kr]5s1 + e- 
D) [Kr]5s2 + e- → [Kr]5s25p1

Question 6

Which of the following has the smallest second ionization energy?

Accepted Answer

A) Si 
B) Mg 
C) Al 
D) P 
A) Si 
B) Mg 
C) Al 
D) P

Question 7

Which of the following statements is INCORRECT?

Accepted Answer

A) The atomic radius decreases from left to right through a period of elements. 
B) Cations are larger than the atoms from which they are formed. 
C) The metallic character of elements decreases from left to right through a period of elements. 
D) The ionization energy increases from left to right through a period of elements. 
E) The atomic radius increases down the periodic table. 
A) The atomic radius decreases from left to right through a period of elements. 
B) Cations are larger than the atoms from which they are formed. 
C) The metallic character of elements decreases from left to right through a period of elements. 
D) The ionization energy increases from left to right through a period of elements. 
E) The atomic radius increases down the periodic table.

Question 8

The similar chemical behavior of the elements in a given group in the periodic table is best accounted for by the fact that atoms of these elements have:

Accepted Answer

A) the same number of isotopes 
B) the same number of electrons 
C) the same number of electrons in the outermost (valence)shell 
D) similar nuclear structures 
E) the same number of protons 
A) the same number of isotopes 
B) the same number of electrons 
C) the same number of electrons in the outermost (valence)shell 
D) similar nuclear structures 
E) the same number of protons

Question 9

Which of the following has the largest radius?

Accepted Answer

A) Se2-  
B) Kr 
C) Rb+  
D) Br-  
E) Y3+  
A) Se2-  
B) Kr 
C) Rb+  
D) Br-  
E) Y3+

Question 10

Of the following,which element has the highest first ionization energy?

Accepted Answer

A) Sr 
B) Rb 
C) Na 
D) Ca 
A) Sr 
B) Rb 
C) Na 
D) Ca

Question 11

The covalent radius,metallic radius,and the ionic radius are all equal.

Accepted Answer

A) True 
 B)False

Question 12

Choose the paramagnetic atom or ion: Zn,Zn2+,Mn2+,Ar,Al3+.

Accepted Answer

A) Zn 
B) Zn2+  
C) Mn2+  
D) Ar 
E) Al3+  
A) Zn 
B) Zn2+  
C) Mn2+  
D) Ar 
E) Al3+

Question 13

Which of the following occurs for the representative elements going left to right across the period?

Accepted Answer

A) Electronegativity decreases. 
B) Atomic size increases. 
C) Forces of attraction between electron and nucleus increase because the effective nuclear charge increases. 
D) The outer electrons are held more weakly. 
E) none of these 
A) Electronegativity decreases. 
B) Atomic size increases. 
C) Forces of attraction between electron and nucleus increase because the effective nuclear charge increases. 
D) The outer electrons are held more weakly. 
E) none of these

Question 14

Which main group atom or ion should be included in the following list?
Br-,Se2-,Kr,Sr2+

Accepted Answer

A) As3- 
B) Ar 
C) K+ 
D) S2- 
A) As3- 
B) Ar 
C) K+ 
D) S2-

Question 15

Which of the following isoelectronic species has the largest radius?

Accepted Answer

A) Ne 
B) F-  
C) Mg2+  
D) Na+ 
E) O2-  
A) Ne 
B) F-  
C) Mg2+  
D) Na+ 
E) O2-

Question 16

Which of the following atoms has the smallest atomic radius: Br,K,Fe,Cu,Bi?

Accepted Answer

A) Br 
B) K 
C) Fe 
D) Cu 
E) Bi 
A) Br 
B) K 
C) Fe 
D) Cu 
E) Bi

Question 17

The effective nuclear charge for sodium is:

Accepted Answer

A) +10 
B) +9 
C) +1 
D) +11 
E) 0 
A) +10 
B) +9 
C) +1 
D) +11 
E) 0

Question 18

Moseley used X-rays to determine the atomic mass of each element.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following has the smallest radius?

Accepted Answer

A) Yb3+  
B) Ho3+  
C) Nd3+  
D) Gd3+  
E) Ce3+  
A) Yb3+  
B) Ho3+  
C) Nd3+  
D) Gd3+  
E) Ce3+

Question 20

List in order of increasing atomic size: Sr,Se,Cs,Ga,In.

Accepted Answer

A) Se < Ga < In < Sr < Cs 
B) Ga < In < Se < Cs < Sr 
C) Sr < In < Ga < Se < Cs 
D) In < Ga < Cs < Se < Sr 
E) Cs < Ga < Se < Sr < In 
A) Se < Ga < In < Sr < Cs 
B) Ga < In < Se < Cs < Sr 
C) Sr < In < Ga < Se < Cs 
D) In < Ga < Cs < Se < Sr 
E) Cs < Ga < Se < Sr < In

Exam 9: The Periodic Table and Some Atomic Properties

A is the sequence Na,Mg,Al,Si,and P.B is the sequence He,Ne,Ar,Kr,and Xe.Which statement below is true?

Among the alkali metals,cesium reacts more rapidly than sodium because:

What is the ground state electron configuration for iron(III)?

Which ionization process requires the most energy?

Which of the following represents the change in electronic configuration that is associated with the first ionization energy of strontium?

Which of the following has the smallest second ionization energy?

Which of the following statements is INCORRECT?

The similar chemical behavior of the elements in a given group in the periodic table is best accounted for by the fact that atoms of these elements have:

Which of the following has the largest radius?

Of the following,which element has the highest first ionization energy?

The covalent radius,metallic radius,and the ionic radius are all equal.

Choose the paramagnetic atom or ion: Zn,Zn2+,Mn2+,Ar,Al3+.

Which of the following occurs for the representative elements going left to right across the period?

Which main group atom or ion should be included in the following list? Br-,Se2-,Kr,Sr2+

Which of the following isoelectronic species has the largest radius?

Which of the following atoms has the smallest atomic radius: Br,K,Fe,Cu,Bi?

The effective nuclear charge for sodium is:

Moseley used X-rays to determine the atomic mass of each element.

Which of the following has the smallest radius?

List in order of increasing atomic size: Sr,Se,Cs,Ga,In.

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Choose the paramagnetic atom or ion: Zn,Zn²⁺,Mn²⁺,Ar,Al³⁺.

Which main group atom or ion should be included in the following list? Br^-,Se^2-,Kr,Sr²⁺