Question 1

The properties of _____ were remarkably close to those Mendeleev predicted for eka-aluminum.

Accepted Answer

A) ​scandium 
B) ​germanium 
C) ​gallium 
D) ​selenium 
E) ​tellurium 
A) ​scandium 
B) ​germanium 
C) ​gallium 
D) ​selenium 
E) ​tellurium

Question 2

The change in energy for which of the following processes corresponds to the first ionization energy of beryllium?

Accepted Answer

A) Be(g)→ Be+(g)+ e- 
B) Be(s)→ Be+(s)+ e- 
C) Be(s)→ Be+(g)+ e- 
D) Be(g)→ Be2+(g)+ 2e- 
E) Be(s)+ e- → Be-(s) 
A) Be(g)→ Be+(g)+ e- 
B) Be(s)→ Be+(s)+ e- 
C) Be(s)→ Be+(g)+ e- 
D) Be(g)→ Be2+(g)+ 2e- 
E) Be(s)+ e- → Be-(s)

Question 3

Which ground-state electron configuration is incorrect?

Accepted Answer

A) Br:[Ar]3d104s24p5 
B) K:[Ar]4s1 
C) Fe:[Ar]3d5 
D) Na:1s22s22p63s1 
E) Zn:[Ar]3d104s2 
A) Br:[Ar]3d104s24p5 
B) K:[Ar]4s1 
C) Fe:[Ar]3d5 
D) Na:1s22s22p63s1 
E) Zn:[Ar]3d104s2

Question 4

Which of the following statements is true concerning the electron configuration [Ne]3s13p1?

Accepted Answer

A) It may represent a ground-state electron configuration of a Al+ cation. 
B) It may represent an excited-state electron configuration of a Mg atom. 
C) It may represent an excited-state electron configuration of a Ne- anion. 
D) It may represent a ground-state electron configuration of a Mg+ cation. 
E) It may represent a ground-state electron configuration of a Na+ cation. 
A) It may represent a ground-state electron configuration of a Al+ cation. 
B) It may represent an excited-state electron configuration of a Mg atom. 
C) It may represent an excited-state electron configuration of a Ne- anion. 
D) It may represent a ground-state electron configuration of a Mg+ cation. 
E) It may represent a ground-state electron configuration of a Na+ cation.

Question 5

What is the maximum number of electrons that can be accommodated in the n = 1 shell?

Accepted Answer

A) 2 
B) 6 
C) 4 
D) 8 
E) 10 
A) 2 
B) 6 
C) 4 
D) 8 
E) 10

Question 6

Which of the following ground-state electron configurations corresponds to an atom that has the most negative value of the electron affinity?

Accepted Answer

A) 1s22s22p63s1 
B) 1s22s22p63s23p5 
C) 1s22s22p63s23p2 
D) 1s22s22p63s23p63d54s2 
E) 1s22s22p6 
A) 1s22s22p63s1 
B) 1s22s22p63s23p5 
C) 1s22s22p63s23p2 
D) 1s22s22p63s23p63d54s2 
E) 1s22s22p6

Question 7

An element that has the same ground state valence-shell electron configuration as sodium is

Accepted Answer

A) lithium. 
B) barium. 
C) boron. 
D) lead. 
E) xenon. 
A) lithium. 
B) barium. 
C) boron. 
D) lead. 
E) xenon.

Question 8

The Pauli exclusion principle states that

Accepted Answer

A) the wavelength of a photon of light times its frequency is equal to the speed of light. 
B) no two electrons in the same atom can have the same set of four quantum numbers. 
C) both the position of an electron and its momentum cannot be known simultaneously very accurately. 
D) the wavelength and mass of a subatomic particle are related by   . 
E) an electron can have either particle character or wave character. 
A) the wavelength of a photon of light times its frequency is equal to the speed of light. 
B) no two electrons in the same atom can have the same set of four quantum numbers. 
C) both the position of an electron and its momentum cannot be known simultaneously very accurately. 
D) the wavelength and mass of a subatomic particle are related by   . 
E) an electron can have either particle character or wave character.

Question 9

When arranged in order of increasing atomic number,the elements exhibit periodicity for all the following properties except

Accepted Answer

A) electron affinity. 
B) color. 
C) ionization energy. 
D) electron configuration. 
E) atomic radius. 
A) electron affinity. 
B) color. 
C) ionization energy. 
D) electron configuration. 
E) atomic radius.

Question 10

Which of the following atoms is paramagnetic in its ground state?

Accepted Answer

A) sodium (Na) 
B) nobelium (No) 
C) neon (Ne) 
D) mercury (Hg) 
E) barium (ba) 
A) sodium (Na) 
B) nobelium (No) 
C) neon (Ne) 
D) mercury (Hg) 
E) barium (ba)

Question 11

Mendeleev's periodic table (1869)can be explained by the periodicity of the _____.

Accepted Answer

A) ​number of orbits around the nucleus 
B) ​atomic radii of elements 
C) ​atomic mass of elements 
D) ​positive charge present in the nucleus of atoms 
E) ​ground-state electron configurations of atoms 
A) ​number of orbits around the nucleus 
B) ​atomic radii of elements 
C) ​atomic mass of elements 
D) ​positive charge present in the nucleus of atoms 
E) ​ground-state electron configurations of atoms

Question 12

Rank the following atoms in order of the largest to smallest atomic radius: B,B,B,C.

Accepted Answer

A) C > B > B > B 
B) B > C > B > B 
C) B > B > C > B 
D) B > B > B > C 
A) C > B > B > B 
B) B > C > B > B 
C) B > B > C > B 
D) B > B > B > C

Question 13

Which element forms the most acidic oxide?

Accepted Answer

A) B 
B) Tl 
C) Al 
D) In 
E) Ga 
A) B 
B) Tl 
C) Al 
D) In 
E) Ga

Question 14

An atom of which of the following elements has the smallest first ionization energy?

Accepted Answer

A) Te 
B) Po 
C) Se 
D) O 
E) S 
A) Te 
B) Po 
C) Se 
D) O 
E) S

Question 15

Which of the following electron configurations is impossible,according to the Pauli exclusion principle?

Accepted Answer

A) 1s22s22p5 
B) 1s22s22p3 
C) 1s22s5 
D) ​1s22s22p63s1 
E) 1s22s22p2 
A) 1s22s22p5 
B) 1s22s22p3 
C) 1s22s5 
D) ​1s22s22p63s1 
E) 1s22s22p2

Question 16

An atom of which of the following elements has the smallest atomic radius?

Accepted Answer

A) P 
B) Cl 
C) S 
D) Na 
E) Si 
A) P 
B) Cl 
C) S 
D) Na 
E) Si

Question 17

Which of the following statements is true concerning the electron configuration [Ne]3p2?

Accepted Answer

A) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Pauli exclusion principle. 
B) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates Hund's rule. 
C) This configuration is the ground-state electron configuration for a Mg atom. 
D) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Heisenberg uncertainty principle. 
E) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Aufbau principle. 
A) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Pauli exclusion principle. 
B) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates Hund's rule. 
C) This configuration is the ground-state electron configuration for a Mg atom. 
D) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Heisenberg uncertainty principle. 
E) This configuration cannot be the ground-state electron configuration for a Mg atom because it violates the Aufbau principle.

Question 18

Which of the following electron configurations represents an excited state of the indicated atom?

Accepted Answer

A) Ne: 1s2 2s2 2p6 
B) N: 1s2 2s2 2p3 
C) P: 1s2 2s2 2p6 3s2 3p2 4s1 
D) Na: 1s2 2s2 2p6 3s2 3p2 3s1 
E) He: 1s2 
A) Ne: 1s2 2s2 2p6 
B) N: 1s2 2s2 2p3 
C) P: 1s2 2s2 2p6 3s2 3p2 4s1 
D) Na: 1s2 2s2 2p6 3s2 3p2 3s1 
E) He: 1s2

Question 19

Which of the following statements is true concerning a concentrated solution of lithium oxide in water?

Accepted Answer

A) The resulting solution is strongly basic. 
B) The resulting solution is weakly acidic. 
C) The resulting solution is neither acidic nor basic. 
D) The resulting solution is weakly basic. 
E) The resulting solution is strongly acidic. 
A) The resulting solution is strongly basic. 
B) The resulting solution is weakly acidic. 
C) The resulting solution is neither acidic nor basic. 
D) The resulting solution is weakly basic. 
E) The resulting solution is strongly acidic.

Question 20

An atom of which of the following elements has the largest atomic radius?

Accepted Answer

A) Ge 
B) Rb 
C) F 
D) Ca 
E) P 
A) Ge 
B) Rb 
C) F 
D) Ca 
E) P

Exam 8: Electron Configurations and Periodicity

The properties of _____ were remarkably close to those Mendeleev predicted for eka-aluminum.

The change in energy for which of the following processes corresponds to the first ionization energy of beryllium?

Which ground-state electron configuration is incorrect?

Which of the following statements is true concerning the electron configuration [Ne]3s13p1?

What is the maximum number of electrons that can be accommodated in the n = 1 shell?

Which of the following ground-state electron configurations corresponds to an atom that has the most negative value of the electron affinity?

An element that has the same ground state valence-shell electron configuration as sodium is

The Pauli exclusion principle states that

When arranged in order of increasing atomic number,the elements exhibit periodicity for all the following properties except

Which of the following atoms is paramagnetic in its ground state?

Mendeleev's periodic table (1869)can be explained by the periodicity of the _____.

Rank the following atoms in order of the largest to smallest atomic radius: B,B,B,C.

Which element forms the most acidic oxide?

An atom of which of the following elements has the smallest first ionization energy?

Which of the following electron configurations is impossible,according to the Pauli exclusion principle?

An atom of which of the following elements has the smallest atomic radius?

Which of the following statements is true concerning the electron configuration [Ne]3p2?

Which of the following electron configurations represents an excited state of the indicated atom?

Which of the following statements is true concerning a concentrated solution of lithium oxide in water?

An atom of which of the following elements has the largest atomic radius?

Chemistry and Measurement

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

Which of the following statements is true concerning the electron configuration [Ne]3s¹3p¹?

Which of the following statements is true concerning the electron configuration [Ne]3p²?