Question 1

How many photons of light with frequency 5.50 × 1015 Hz are required to provide 1 kJ of energy?

Accepted Answer

A) 3.64 × 10-18 photons 
B) 2.74 × 1020 photons 
C) 4.56 × 10-4 photons 
D) 1.65 × 1044 photons 
E) 3.64 × 10-16 photons 
A) 3.64 × 10-18 photons 
B) 2.74 × 1020 photons 
C) 4.56 × 10-4 photons 
D) 1.65 × 1044 photons 
E) 3.64 × 10-16 photons B

Question 2

Which of the following have their valence electrons in the same shell?

Accepted Answer

A) Li,N,F 
B) B,Si,As 
C) N,As,Bi 
D) He,Ne,F 
A) Li,N,F 
B) B,Si,As 
C) N,As,Bi 
D) He,Ne,F A

Question 3

Which of the following orbitals have their lobes aligned along the y axis?
I.dS1U1B1xyS1U1B0
II.dS1U1B1xS1U1B0 S1U1P12-2yS1S1P0
III.pS1U1B1yS1U1B0
IV.dS1U1B1yzS1U1B0

Accepted Answer

A) II and III 
B) I and IV 
C) I and IIS1U1B1 S1U1B0 
D) II and IV 
E) I and III 
A) II and III 
B) I and IV 
C) I and IIS1U1B1 S1U1B0 
D) II and IV 
E) I and III A

Question 4

The symbol "n" in the Bohr theory of atomic structure refers to:

Accepted Answer

A) the energy of the electrons 
B) the total energy of the atom 
C) the number of electrons in an orbit 
D) the orbit in which an electron is found 
E) the number of orbits in an atom 
A) the energy of the electrons 
B) the total energy of the atom 
C) the number of electrons in an orbit 
D) the orbit in which an electron is found 
E) the number of orbits in an atom

Question 5

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

Accepted Answer

A) 656.3 nm 
B) 486.2 nm 
C) 364.6 nm 
D) 2.057 × 10-3 nm 
A) 656.3 nm 
B) 486.2 nm 
C) 364.6 nm 
D) 2.057 × 10-3 nm

Question 6

Arrange the following in order of increasing ENERGY:
UV radiation,visible radiation,X-rays,and microwaves.

Accepted Answer

A) X-rays < microwave < UV < visible 
B) X-ray < microwave < visible < UV 
C) microwave < visible < UV < X-rays 
D) visible < UV < X-rays < microwave 
E) UV < X-rays < microwave < visible 
A) X-rays < microwave < UV < visible 
B) X-ray < microwave < visible < UV 
C) microwave < visible < UV < X-rays 
D) visible < UV < X-rays < microwave 
E) UV < X-rays < microwave < visible

Question 7

An FM radio station broadcasts electromagnetic radiation at a frequency of 100.6 MHz.The wavelength of this radiation is ________ m.

Accepted Answer

A) 2.982 ×   
B) 2.982 
C) 3.018 ×   
D) 3.018 ×   
E) 0.3353 
A) 2.982 ×   
B) 2.982 
C) 3.018 ×   
D) 3.018 ×   
E) 0.3353

Question 8

Four of the 3d orbitals are alike except for the orientation with respect to the axes.

Accepted Answer

A) True 
 B)False

Question 9

The four quantum numbers of the LAST electron to be placed into a Ca atom are ________.

Accepted Answer

A) n = 4,ℓ = 1,mℓ = 0,ms = -1/2 
B) n = 3,ℓ = 0,mℓ = 1,ms = -1/2 
C) n = 4,ℓ = 1,mℓ = 0,ms = +1/2 
D) n = 4,ℓ = 0,mℓ = 0,ms = -1/2 
E) n = 4,ℓ = 2,mℓ = 0,ms = +1/2 
A) n = 4,ℓ = 1,mℓ = 0,ms = -1/2 
B) n = 3,ℓ = 0,mℓ = 1,ms = -1/2 
C) n = 4,ℓ = 1,mℓ = 0,ms = +1/2 
D) n = 4,ℓ = 0,mℓ = 0,ms = -1/2 
E) n = 4,ℓ = 2,mℓ = 0,ms = +1/2

Question 10

A television signal has a wavelength of 10.0 km.What is its frequency in kilohertz?

Accepted Answer

A) 30.0 kHz 
B) 3.00 × 104 kHz 
C) 3.00 × 107 kHz 
D) 3.33 × 10-7 kHz 
E) 3.33 × 10-2 kHz 
A) 30.0 kHz 
B) 3.00 × 104 kHz 
C) 3.00 × 107 kHz 
D) 3.33 × 10-7 kHz 
E) 3.33 × 10-2 kHz

Question 11

The quantum numbers of the last electron of nickel could be:

Accepted Answer

A) n = 3,ℓ = 2,mℓ = 0,ms = -1/2 
B) n = 4,ℓ = 2,mℓ = 0,ms = +1/2 
C) n = 3,ℓ = 1,mℓ = 0,ms = +1/2 
D) n = 3,ℓ = 2,mℓ = 0,ms = 0 
E) n = 3,ℓ = 2,mℓ = 1/2,ms = +1/2 
A) n = 3,ℓ = 2,mℓ = 0,ms = -1/2 
B) n = 4,ℓ = 2,mℓ = 0,ms = +1/2 
C) n = 3,ℓ = 1,mℓ = 0,ms = +1/2 
D) n = 3,ℓ = 2,mℓ = 0,ms = 0 
E) n = 3,ℓ = 2,mℓ = 1/2,ms = +1/2

Question 12

An atomic orbital represents:

Accepted Answer

A) the shape of an atom 
B) the repulsion of all the electrons among themselves 
C) a fixed path that an electron follows around the nucleus of an atom 
D) the region of electron density for a covalent bond 
E) the region of high probability for an electron to exist near the nucleus of an atom 
A) the shape of an atom 
B) the repulsion of all the electrons among themselves 
C) a fixed path that an electron follows around the nucleus of an atom 
D) the region of electron density for a covalent bond 
E) the region of high probability for an electron to exist near the nucleus of an atom

Question 13

Exceptions to ________ are represented by chromium and copper in the 4th row of the periodic table.

Accepted Answer

A) the Aufbau Principle 
B) Hund's Rule 
C) the Bohr Theory 
D) the Heisenberg Principle 
E) the Pauli Exclusion Principle 
A) the Aufbau Principle 
B) Hund's Rule 
C) the Bohr Theory 
D) the Heisenberg Principle 
E) the Pauli Exclusion Principle

Question 14

The complete electron configuration of nickel,element 28,is:

Accepted Answer

A)  [Ar] 3d104s24p5  
B)  [Kr] 3d104s24p4 
C)  [Ar] 3d94s24p6 
D)  [Ar] 3d104p65s2 
E)  [Ar] 4s24p24d9 
A)  [Ar] 3d104s24p5  
B)  [Kr] 3d104s24p4 
C)  [Ar] 3d94s24p6 
D)  [Ar] 3d104p65s2 
E)  [Ar] 4s24p24d9

Question 15

Use Planck's equation to determine the wavelength,in nm,of radiation with 200.0 kJ/mol of energy.

Accepted Answer

A) 167 nm 
B) 598 nm 
C) 5.98 × 105 nm 
D) 1.67 × 105 nm 
E) 242 nm 
A) 167 nm 
B) 598 nm 
C) 5.98 × 105 nm 
D) 1.67 × 105 nm 
E) 242 nm

Question 16

Which of the following statements concerning quantum numbers is NOT correct?

Accepted Answer

A) "n" relates the most probable distance from the nucleus. 
B) "l" denotes geometric shape. 
C) "m" denotes orientation of an orbital with respect to the others. 
D) The fourth quantum number refers to electron spin. 
E) The four quantum numbers are derived from wave mechanics. 
A) "n" relates the most probable distance from the nucleus. 
B) "l" denotes geometric shape. 
C) "m" denotes orientation of an orbital with respect to the others. 
D) The fourth quantum number refers to electron spin. 
E) The four quantum numbers are derived from wave mechanics.

Question 17

What is the wavelength of a ball that is 25.0 g traveling at 40.2 m/s?

Accepted Answer

A) 6.59 × 10-37 m 
B) 6.59 × 10-34 m 
C) 1.07 × 10-30 m 
D) 4.12 × 10-37 m 
E) 2.42 × 10-11 m 
A) 6.59 × 10-37 m 
B) 6.59 × 10-34 m 
C) 1.07 × 10-30 m 
D) 4.12 × 10-37 m 
E) 2.42 × 10-11 m

Question 18

Which element has the ground-state electron configuration [Rn]7s2   6d 2?

Accepted Answer

A) Rf 
B) Sg 
C) Th 
D) Pa 
A) Rf 
B) Sg 
C) Th 
D) Pa

Question 19

Which ion does not have a noble gas configuration in its ground electronic state?

Accepted Answer

A) Sc3+ 
B) Al3+ 
C) Ga3+ 
D) As3- 
A) Sc3+ 
B) Al3+ 
C) Ga3+ 
D) As3-

Question 20

The quantum numbers of the last electron of silicon are ________.

Accepted Answer

A) n = 3,ℓ = 1,mℓ = 1,ms = 1 
B) n = 2,ℓ = 1,mℓ = 1,ms = +1/2 
C) n = 4,ℓ = 1,mℓ = 1,ms = +1/2 
D) n = 3,ℓ = 1,mℓ = 0,ms = +1/2 
E) n = 2,ℓ = 0,mℓ = 0,ms = +1/2 
A) n = 3,ℓ = 1,mℓ = 1,ms = 1 
B) n = 2,ℓ = 1,mℓ = 1,ms = +1/2 
C) n = 4,ℓ = 1,mℓ = 1,ms = +1/2 
D) n = 3,ℓ = 1,mℓ = 0,ms = +1/2 
E) n = 2,ℓ = 0,mℓ = 0,ms = +1/2

Exam 8: Electrons in Atoms

How many photons of light with frequency 5.50 × 1015 Hz are required to provide 1 kJ of energy?

Which of the following have their valence electrons in the same shell?

Which of the following orbitals have their lobes aligned along the y axis? I.dxy II.dx 2-2y III.py IV.dyz

The symbol "n" in the Bohr theory of atomic structure refers to:

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10-2 nm-1.

Arrange the following in order of increasing ENERGY: UV radiation,visible radiation,X-rays,and microwaves.

An FM radio station broadcasts electromagnetic radiation at a frequency of 100.6 MHz.The wavelength of this radiation is ________ m.

Four of the 3d orbitals are alike except for the orientation with respect to the axes.

The four quantum numbers of the LAST electron to be placed into a Ca atom are ________.

A television signal has a wavelength of 10.0 km.What is its frequency in kilohertz?

The quantum numbers of the last electron of nickel could be:

An atomic orbital represents:

Exceptions to ________ are represented by chromium and copper in the 4th row of the periodic table.

The complete electron configuration of nickel,element 28,is:

Use Planck's equation to determine the wavelength,in nm,of radiation with 200.0 kJ/mol of energy.

Which of the following statements concerning quantum numbers is NOT correct?

What is the wavelength of a ball that is 25.0 g traveling at 40.2 m/s?

Which element has the ground-state electron configuration [Rn]7s2 6d 2?

Which ion does not have a noble gas configuration in its ground electronic state?

The quantum numbers of the last electron of silicon are ________.

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

The Periodic Table and Some Atomic Properties

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

How many photons of light with frequency 5.50 × 10¹⁵ Hz are required to provide 1 kJ of energy?

Which of the following orbitals have their lobes aligned along the y axis? I.d_xy II.d_x ^2-2y III.p_y IV.d_yz

For hydrogen,what is the wavelength of the photon emitted when an electron drops from a 4d orbital to a 2p orbital in a hydrogen atom? The Rydberg constant is 1.097 × 10^-2 nm^-1.

Which element has the ground-state electron configuration [Rn]7s² 6^d²?