Question 1

Which statement regarding the wave function as suggested by Erwin Schrodinger is INCORRECT?

Accepted Answer

A) It is the lowest energy value of a particle. 
B) It's value can be zero. 
C) It is denoted by psi (Ψ). 
D) Zero-point energy corresponds to n = 1. 
E) The zero-point energy is an allowable value of the energy of the particle. 
A) It is the lowest energy value of a particle. 
B) It's value can be zero. 
C) It is denoted by psi (Ψ). 
D) Zero-point energy corresponds to n = 1. 
E) The zero-point energy is an allowable value of the energy of the particle.

Question 2

Frequency and wavelength are related by the equation:

Accepted Answer

A) λ = c ∙ v 
B) λ = c/v 
C) v = λ/c 
D) λ = v/c 
E) c = λ/v 
A) λ = c ∙ v 
B) λ = c/v 
C) v = λ/c 
D) λ = v/c 
E) c = λ/v

Question 3

Which of the following statements about orbital shapes is NOT true?

Accepted Answer

A) A 1s orbital is spherical. 
B) 2p orbitals have a node at r = 0. 
C) There are only two 2p orbitals,each directed along and x or y axis. 
D) There are five 3d orbitals. 
E) Four of the 3d orbitals are alike except for the orientation with respect to the axes. 
A) A 1s orbital is spherical. 
B) 2p orbitals have a node at r = 0. 
C) There are only two 2p orbitals,each directed along and x or y axis. 
D) There are five 3d orbitals. 
E) Four of the 3d orbitals are alike except for the orientation with respect to the axes.

Question 4

For the Bohr hydrogen atom determine the energy level corresponding to n = 3.

Accepted Answer

A) 7.26 × 10-19 J 
B) 7.36 × 10-35 J 
C) -2.42 × 10-19 J 
D) 3.33 × 107 J 
E) 1.96 × 10-17 J 
A) 7.26 × 10-19 J 
B) 7.36 × 10-35 J 
C) -2.42 × 10-19 J 
D) 3.33 × 107 J 
E) 1.96 × 10-17 J

Question 5

What is the wavelength,in nm,of light with an energy content of 550 kJ/mol?

Accepted Answer

A) 0.218 nm 
B) 0.419 nm 
C) 157 nm 
D) 218 nm 
E) 6579 nm 
A) 0.218 nm 
B) 0.419 nm 
C) 157 nm 
D) 218 nm 
E) 6579 nm

Question 6

Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye.The energy of one photon of this light is 3.74 ×   J.Thus,a laser that emits   Of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

Accepted Answer

A) 2.9 ×   
B) 9.2 × 10-24 
C) 1.8 ×   
D) 3.5 ×   
E) 6.5 ×   
A) 2.9 ×   
B) 9.2 × 10-24 
C) 1.8 ×   
D) 3.5 ×   
E) 6.5 ×

Question 7

What is an acceptable value for the missing quantum number?
N = 4,ℓ = 2,mℓ = 0,ms = ?

Accepted Answer

A) 0 
B) +1/2 
C) 1 
D) 2 
E) 3/2 
A) 0 
B) +1/2 
C) 1 
D) 2 
E) 3/2

Question 8

When an electron in an atom goes from a high energy state to a low one,light is given off.

Accepted Answer

A) True 
 B)False

Question 9

The ground state electron configuration of phosphorus is ________.

Accepted Answer

A) 1s22s22p43p63d1  
B) [Ar] 3s23p3  
C) 1s22s22p63s23p3  
D) 1s22s22p63s43p1  
E) 1s22s22p63s22d3  
A) 1s22s22p43p63d1  
B) [Ar] 3s23p3  
C) 1s22s22p63s23p3  
D) 1s22s22p63s43p1  
E) 1s22s22p63s22d3

Question 10

Which of the following statements about the electron spin quantum number is FALSE?

Accepted Answer

A) ms denotes the spin quantum number. 
B) The value of the spin quantum number can be +1/2 or -1/2. 
C) The value of the spin quantum number does not depend on other quantum numbers. 
D) The value of the spin quantum number can be indicated by arrows to the right and to the left. 
E) The spin quantum number is an indication that electrons generate a magnetic field. 
A) ms denotes the spin quantum number. 
B) The value of the spin quantum number can be +1/2 or -1/2. 
C) The value of the spin quantum number does not depend on other quantum numbers. 
D) The value of the spin quantum number can be indicated by arrows to the right and to the left. 
E) The spin quantum number is an indication that electrons generate a magnetic field.

Question 11

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

Accepted Answer

A) n = 6,ℓ = 0,mℓ = 1,ms = 1 
B) n = 5,ℓ = 0,mℓ = 0,ms = +1/2 
C) n = 6,ℓ = 0,mℓ = 1,ms = +1/2 
D) n = 6,ℓ = 1,mℓ = 0,ms = +1/2 
E) n = 6,ℓ = 0,mℓ = 0,ms = -1/2 
A) n = 6,ℓ = 0,mℓ = 1,ms = 1 
B) n = 5,ℓ = 0,mℓ = 0,ms = +1/2 
C) n = 6,ℓ = 0,mℓ = 1,ms = +1/2 
D) n = 6,ℓ = 1,mℓ = 0,ms = +1/2 
E) n = 6,ℓ = 0,mℓ = 0,ms = -1/2

Question 12

What is the frequency of radiation with a wavelength of 440.nm?

Accepted Answer

A) 6.81 × 1014 s-1  
B) 6.81 × 105 s-1  
C) 1.51 × 10-27 s-1  
D) 4.95 × 10-12 s-1  
E) 2.02 × 10-11 s-1  
A) 6.81 × 1014 s-1  
B) 6.81 × 105 s-1  
C) 1.51 × 10-27 s-1  
D) 4.95 × 10-12 s-1  
E) 2.02 × 10-11 s-1

Question 13

Use the basic rules for electron configuration to indicate the number of unpaired electrons in phosphorus.

Accepted Answer

A) 0 
B) 1 
C) 3 
D) 5 
E) 2 
A) 0 
B) 1 
C) 3 
D) 5 
E) 2

Question 14

Calculate the wavelength in meters of light absorbed by an electron in an atom of hydrogen as it moves that makes a transition from n = 3 to n = 6.

Accepted Answer

A) 1.09 × 10-6 m 
B) 8.22 × 10-7 m 
C) 3.28 × 10-6 m 
D) 1.83 × 10-7 m 
E) 1.65 × 10-11 m 
A) 1.09 × 10-6 m 
B) 8.22 × 10-7 m 
C) 3.28 × 10-6 m 
D) 1.83 × 10-7 m 
E) 1.65 × 10-11 m

Question 15

How many unpaired electrons are in the ground state electron configuration of chromium?

Accepted Answer

A) 5 
B) 6 
C) 4 
D) 2 
E) 0 
A) 5 
B) 6 
C) 4 
D) 2 
E) 0

Question 16

Give the appropriate values of n and ℓ for the orbital designation 3p.

Accepted Answer

A) n = 3,ℓ = 0 
B) n = 1,ℓ = 3 
C) n = 3,ℓ = 3 
D) n = 3,ℓ = 1 
E) n = 3,ℓ = 2 
A) n = 3,ℓ = 0 
B) n = 1,ℓ = 3 
C) n = 3,ℓ = 3 
D) n = 3,ℓ = 1 
E) n = 3,ℓ = 2

Question 17

Which two orbitals are located between the axes of a coordinate system and not along the axes?

Accepted Answer

A) dxy,py  
B) dyz,px  
C) dx2-y2,pz  
D) dxy,dz2  
E) dxy,dyz  
A) dxy,py  
B) dyz,px  
C) dx2-y2,pz  
D) dxy,dz2  
E) dxy,dyz

Question 18

The principle that is based on electrons attempting to be as far apart as possible is the:

Accepted Answer

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

Question 19

Give the appropriate values of n and ℓ for the orbital designation 3s.

Accepted Answer

A) n = 3,ℓ = 1 
B) n = 0,ℓ = 3 
C) n = 3,ℓ = 3 
D) n = 3,ℓ = 2 
E) n = 3,ℓ = 0 
A) n = 3,ℓ = 1 
B) n = 0,ℓ = 3 
C) n = 3,ℓ = 3 
D) n = 3,ℓ = 2 
E) n = 3,ℓ = 0

Question 20

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm.The constant for Balmer's equation is 3.2881 × 1015 s-1.

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) 7 
A) 3 
B) 4 
C) 5 
D) 6 
E) 7

Exam 8: Electrons in Atoms

Which statement regarding the wave function as suggested by Erwin Schrodinger is INCORRECT?

Frequency and wavelength are related by the equation:

Which of the following statements about orbital shapes is NOT true?

For the Bohr hydrogen atom determine the energy level corresponding to n = 3.

What is the wavelength,in nm,of light with an energy content of 550 kJ/mol?

Electromagnetic radiation with a wavelength of 531 nm appears as green light to the human eye.The energy of one photon of this light is 3.74 × J.Thus,a laser that emits Of energy in a pulse of light at this wavelength produces ________ photons in each pulse.

What is an acceptable value for the missing quantum number? N = 4,ℓ = 2,mℓ = 0,ms = ?

When an electron in an atom goes from a high energy state to a low one,light is given off.

The ground state electron configuration of phosphorus is ________.

Which of the following statements about the electron spin quantum number is FALSE?

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

What is the frequency of radiation with a wavelength of 440.nm?

Use the basic rules for electron configuration to indicate the number of unpaired electrons in phosphorus.

Calculate the wavelength in meters of light absorbed by an electron in an atom of hydrogen as it moves that makes a transition from n = 3 to n = 6.

How many unpaired electrons are in the ground state electron configuration of chromium?

Give the appropriate values of n and ℓ for the orbital designation 3p.

Which two orbitals are located between the axes of a coordinate system and not along the axes?

The principle that is based on electrons attempting to be as far apart as possible is the:

Give the appropriate values of n and ℓ for the orbital designation 3s.

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm.The constant for Balmer's equation is 3.2881 × 1015 s-1.

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

What is an acceptable value for the missing quantum number? N = 4,ℓ = 2,m_ℓ = 0,m_s = ?

Use the Balmer equation to determine n for the spectral line of wavelength 434 nm.The constant for Balmer's equation is 3.2881 × 10¹⁵ s^-1.