Question 1

Which of the following sublevels is filled last?

Accepted Answer

A)  3d 
B)  4s 
C)  4p 
D)  4d 
E)  5s 
A)  3d 
B)  4s 
C)  4p 
D)  4d 
E)  5s D

Question 2

The most acidic oxides are formed from elements found in the _________________ region of the periodic table.

Accepted Answer

A)  upper right 
B)  upper left 
C)  center 
D)  lower right 
E)  lower left 
A)  upper right 
B)  upper left 
C)  center 
D)  lower right 
E)  lower left A

Question 3

Which one of the following statements about orbital energies is incorrect?

Accepted Answer

A)  In the hydrogen atom, the energy of an orbital depends only on the value of the quantum number n. 
B)  In many-electron atoms the energy of an orbital depends on both n and l. 
C)  Inner electrons shield outer electrons more effectively than do electrons in the same orbital. 
D)  The splitting of sublevels in many-electron atoms is explained in terms of the penetration effect. 
E)  The energy of a given orbital increases as the nuclear charge Z increases. 
A)  In the hydrogen atom, the energy of an orbital depends only on the value of the quantum number n. 
B)  In many-electron atoms the energy of an orbital depends on both n and l. 
C)  Inner electrons shield outer electrons more effectively than do electrons in the same orbital. 
D)  The splitting of sublevels in many-electron atoms is explained in terms of the penetration effect. 
E)  The energy of a given orbital increases as the nuclear charge Z increases. E

Question 4

Define what is meant by ionization energy, and write a balanced chemical equation to represent the relevant process for element X.

Accepted Answer

Ionization energy is the minim

Question 5

Which of the following atoms will be diamagnetic?

Accepted Answer

A)  Cr 
B)  Ru 
C)  Fe 
D)  Pt 
E)  Cd 
A)  Cr 
B)  Ru 
C)  Fe 
D)  Pt 
E)  Cd

Question 6

Which of the following has the most negative electron affinity?

Accepted Answer

A)  H 
B)  Li 
C)  Na 
D)  K 
E)  Rb 
A)  H 
B)  Li 
C)  Na 
D)  K 
E)  Rb

Question 7

Which of the following elements has the largest atomic size?

Accepted Answer

A)  S 
B)  Ca 
C)  Ba 
D)  Po 
E)  Rn 
A)  S 
B)  Ca 
C)  Ba 
D)  Po 
E)  Rn

Question 8

Bigger atoms generally have smaller ionization energies.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following electron configurations is impossible?

Accepted Answer

A)  1s22s22p63s23p4 
B)  1s22s22p53s13p4 
C)  1s22s22p63s23p63d104s2 
D)  1s22s22p63s33p4 
E)  1s12s22p63s23p4 
A)  1s22s22p63s23p4 
B)  1s22s22p53s13p4 
C)  1s22s22p63s23p63d104s2 
D)  1s22s22p63s33p4 
E)  1s12s22p63s23p4

Question 10

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)  Ne 
A)  H 
B)  Li 
C)  C 
D)  F 
E)  Ne

Question 11

Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in the ground state of tin, Sn.

Accepted Answer

A)  5, 2, -1, ½ 
B)  5, 2, 0, ½ 
C)  5, 1, 2, ½ 
D)  5, 1, 0, ½ 
E)  5, 2, 1, ½ 
A)  5, 2, -1, ½ 
B)  5, 2, 0, ½ 
C)  5, 1, 2, ½ 
D)  5, 1, 0, ½ 
E)  5, 2, 1, ½

Question 12

Select the most basic compound from the following:

Accepted Answer

A)  Bi2O3 
B)  SiO2 
C)  Cs2O 
D)  Na2O 
E)  H2O 
A)  Bi2O3 
B)  SiO2 
C)  Cs2O 
D)  Na2O 
E)  H2O

Question 13

Which one of the following equations correctly represents the process involved in the electron affinity of X?

Accepted Answer

A)  X(g) $\rightarrow$ X+(g) + e¯ 
B)  X+(g) $\rightarrow$ X+(aq) 
C)  X+(g) + e¯ $\rightarrow$X(g) 
D)  X(g) + e¯ $\rightarrow$X¯(g) 
E)  X+(g) + Y¯(g) $\rightarrow$ XY(s) 
A)  X(g) $\rightarrow$ X+(g) + e¯ 
B)  X+(g) $\rightarrow$ X+(aq) 
C)  X+(g) + e¯ $\rightarrow$X(g) 
D)  X(g) + e¯ $\rightarrow$X¯(g) 
E)  X+(g) + Y¯(g) $\rightarrow$ XY(s)

Question 14

Select the element with the least metallic character.

Accepted Answer

A)  Sn 
B)  Sr 
C)  Tl 
D)  Ge 
E)  Ga 
A)  Sn 
B)  Sr 
C)  Tl 
D)  Ge 
E)  Ga

Question 15

Describe how the ionization energies of main group elements vary across a period in the periodic table, using a diagram if necessary.

Accepted Answer

Ionization energies generally

Question 16

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

Accepted Answer

A)  Na 
B)  Cl 
C)  Ca 
D)  Te 
E)  Br 
A)  Na 
B)  Cl 
C)  Ca 
D)  Te 
E)  Br

Question 17

In neutral atoms, the 3d orbitals have higher energy than the 4s orbitals.

Accepted Answer

A) True 
 B)False

Question 18

Select the paramagnetic ion.

Accepted Answer

A)  Cu+ 
B)  Ag+ 
C)  Fe3+ 
D)  Cd2+ 
E)  Ca2+ 
A)  Cu+ 
B)  Ag+ 
C)  Fe3+ 
D)  Cd2+ 
E)  Ca2+

Question 19

Which of the following sets of elements have the [noble gas]ns2np2 valence electron configuration?

Accepted Answer

A)  O, S, Se, Te, Po 
B)  N, P, As, Sb, Bi 
C)  F, Cl, Br, I, At 
D)  C, Si, Ge, Sn, Pb 
E)  Ti, Zr, Hf 
A)  O, S, Se, Te, Po 
B)  N, P, As, Sb, Bi 
C)  F, Cl, Br, I, At 
D)  C, Si, Ge, Sn, Pb 
E)  Ti, Zr, Hf

Question 20

In moving down a group in the periodic table, the oxides of the elements become more acidic in nature.

Accepted Answer

A) True 
 B)False

Exam 8: Electron Configuration and Chemical Periodicity

Which of the following sublevels is filled last?

The most acidic oxides are formed from elements found in the _________________ region of the periodic table.

Which one of the following statements about orbital energies is incorrect?

Define what is meant by ionization energy, and write a balanced chemical equation to represent the relevant process for element X.

Which of the following atoms will be diamagnetic?

Which of the following has the most negative electron affinity?

Which of the following elements has the largest atomic size?

Bigger atoms generally have smaller ionization energies.

Which of the following electron configurations is impossible?

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

Select the correct set of quantum numbers (n, l, ml, ms) for the highest energy electron in the ground state of tin, Sn.

Select the most basic compound from the following:

Which one of the following equations correctly represents the process involved in the electron affinity of X?

Select the element with the least metallic character.

Describe how the ionization energies of main group elements vary across a period in the periodic table, using a diagram if necessary.

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

In neutral atoms, the 3d orbitals have higher energy than the 4s orbitals.

Select the paramagnetic ion.

Which of the following sets of elements have the [noble gas]ns2np2 valence electron configuration?

In moving down a group in the periodic table, the oxides of the elements become more acidic in nature.

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Select the correct set of quantum numbers (n, l, m_l, m_s) for the highest energy electron in the ground state of tin, Sn.

Which of the following sets of elements have the [noble gas]ns²np² valence electron configuration?