Question 1

The ground state electron configuration of scandium is ________.

Accepted Answer

[Ar]4s²3d¹

Question 2

What is the frequency (s-1)of a photon that has an energy of 4.38 × 10-18 J?

Accepted Answer

A) 436 s-1 
B) 6.61 × 1015 s-1 
C) 1.45 × 10-16 s-1 
D) 2.30 ×107 s-1 
E) 1.31 × 10-9 s-1 
A) 436 s-1 
B) 6.61 × 1015 s-1 
C) 1.45 × 10-16 s-1 
D) 2.30 ×107 s-1 
E) 1.31 × 10-9 s-1 B

Question 3

Which of the following is a valid set of four quantum numbers? (n, l, ml, ms)

Accepted Answer

A) 2, 1, 0, +1/2 
B) 2, 2, 1, -1/2 
C) 1, 0, 1, +1/2 
D) 2, 1, +2, +1/2 
E) 1, 1, 0, -1/2 
A) 2, 1, 0, +1/2 
B) 2, 2, 1, -1/2 
C) 1, 0, 1, +1/2 
D) 2, 1, +2, +1/2 
E) 1, 1, 0, -1/2 A

Question 4

The wavelength of radio waves can be longer than a football field.

Accepted Answer

A) True 
 B)False

Question 5

The de Broglie wavelength of a bullet (7.5 g)traveling at 700 m/s is ________ m.

Accepted Answer

A) 7.7 × 1033 
B) 1.3 × 10-34 
C) 6.2 × 10-29 
D) 1.3 × 10-27 
E) 1.3 × 10-23 
A) 7.7 × 1033 
B) 1.3 × 10-34 
C) 6.2 × 10-29 
D) 1.3 × 10-27 
E) 1.3 × 10-23

Question 6

An electron in a Bohr hydrogen atom has an energy of -1.362 × 10-19 J. The value of n for this electron is ________.

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 7

The ground-state electron configuration of V is ________.

Accepted Answer

A) 1s22s22p63s23p64s23d3 
B) 1s22s22p63s23p63d5 
C) 1s22s22p63s23p11  
D) 1s22s22p63s23p64s23d4 
E) None of the above 
A) 1s22s22p63s23p64s23d3 
B) 1s22s22p63s23p63d5 
C) 1s22s22p63s23p11  
D) 1s22s22p63s23p64s23d4 
E) None of the above

Question 8

There are ________ unpaired electrons in a ground state chlorine atom.

Accepted Answer

A) 4 
B) 3 
C) 2 
D) 1 
E) 0 
A) 4 
B) 3 
C) 2 
D) 1 
E) 0

Question 9

The ________ quantum number defines the shape of an orbital.

Accepted Answer

A) spin 
B) magnetic 
C) principal 
D) angular momentum 
E) psi 
A) spin 
B) magnetic 
C) principal 
D) angular momentum 
E) psi

Question 10

Blackbody radiation is the emission of light from metal surfaces.

Accepted Answer

A) True 
 B)False

Question 11

The photoelectric effect is ________.

Accepted Answer

A) the total reflection of light by metals giving them their typical luster 
B) the production of current by silicon solar cells when exposed to sunlight 
C) the ejection of electrons by a metal when struck with light of sufficient energy 
D) the darkening of photographic film when exposed to an electric field 
E) a relativistic effect 
A) the total reflection of light by metals giving them their typical luster 
B) the production of current by silicon solar cells when exposed to sunlight 
C) the ejection of electrons by a metal when struck with light of sufficient energy 
D) the darkening of photographic film when exposed to an electric field 
E) a relativistic effect

Question 12

Which one of the following configurations depicts an excited oxygen atom?

Accepted Answer

A) 1s22s22p2 
B) 1s22s22p23s2 
C) 1s22s22p1 
D) 1s22s22p4 
E) [He]2s22p4 
A) 1s22s22p2 
B) 1s22s22p23s2 
C) 1s22s22p1 
D) 1s22s22p4 
E) [He]2s22p4

Question 13

What is the wavelength (angstroms)of a photon that has an energy of 4.38 × 10-18 J?

Accepted Answer

A) 45.4 angstroms 
B) 2.30 × 107 angstroms 
C) 6.89 × 1015 angstroms 
D) 1.45 × 10-16 angstroms 
E) 1.31 × 10-9 angstroms 
A) 45.4 angstroms 
B) 2.30 × 107 angstroms 
C) 6.89 × 1015 angstroms 
D) 1.45 × 10-16 angstroms 
E) 1.31 × 10-9 angstroms

Question 14

What is the frequency of light (s-1)that has a wavelength of 3.12 × 10-3 cm?

Accepted Answer

A) 3.69 s-1 
B) 2.44 × 1016 s-1 
C) 9.62 × 1012 s-1 
D) 4.10 × 10-17 s-1 
E) 1.04 × 10-13 s-1 
A) 3.69 s-1 
B) 2.44 × 1016 s-1 
C) 9.62 × 1012 s-1 
D) 4.10 × 10-17 s-1 
E) 1.04 × 10-13 s-1

Question 15

According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the ________ of an electron.

Accepted Answer

A) mass 
B) color 
C) momentum 
D) shape 
E) charge 
A) mass 
B) color 
C) momentum 
D) shape 
E) charge

Question 16

The shape of an orbital is defined by the angular momentum quantum number which is represented as letter ________.

Accepted Answer

The answer of The shape of an orbital is defined...

Question 17

The n = 2 to n = 6 transition in the Bohr hydrogen atom corresponds to the ________ of a photon with a wavelength of ________ nm.

Accepted Answer

A) emission, 410 
B) absorption, 410 
C) absorption, 660 
D) emission, 94 
E) emission, 390 
A) emission, 410 
B) absorption, 410 
C) absorption, 660 
D) emission, 94 
E) emission, 390

Question 18

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

Accepted Answer

A) 2d 
B) 2s 
C) 2p 
D) all of the above 
E) none of the above 
A) 2d 
B) 2s 
C) 2p 
D) all of the above 
E) none of the above

Question 19

The ground state electron configuration of copper is ________.

Accepted Answer

The answer of The ground state electron configuration of copper...

Question 20

Ham radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is ________ MHz.

Accepted Answer

A) 500 
B) 200 
C) 50 
D) 20 
E) 2.0 
A) 500 
B) 200 
C) 50 
D) 20 
E) 2.0

Exam 6: Electronic Structure of Atoms

The ground state electron configuration of scandium is ________.

What is the frequency (s-1)of a photon that has an energy of 4.38 × 10-18 J?

Which of the following is a valid set of four quantum numbers? (n, l, ml, ms)

The wavelength of radio waves can be longer than a football field.

The de Broglie wavelength of a bullet (7.5 g)traveling at 700 m/s is ________ m.

An electron in a Bohr hydrogen atom has an energy of -1.362 × 10-19 J. The value of n for this electron is ________.

The ground-state electron configuration of V is ________.

There are ________ unpaired electrons in a ground state chlorine atom.

The ________ quantum number defines the shape of an orbital.

Blackbody radiation is the emission of light from metal surfaces.

The photoelectric effect is ________.

Which one of the following configurations depicts an excited oxygen atom?

What is the wavelength (angstroms)of a photon that has an energy of 4.38 × 10-18 J?

What is the frequency of light (s-1)that has a wavelength of 3.12 × 10-3 cm?

According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the ________ of an electron.

The shape of an orbital is defined by the angular momentum quantum number which is represented as letter ________.

The n = 2 to n = 6 transition in the Bohr hydrogen atom corresponds to the ________ of a photon with a wavelength of ________ nm.

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

The ground state electron configuration of copper is ________.

Ham radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is ________ MHz.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

What is the frequency (s^-1)of a photon that has an energy of 4.38 × 10^-18J?

Which of the following is a valid set of four quantum numbers? (n, l, m_l, m_s)

An electron in a Bohr hydrogen atom has an energy of -1.362 × 10^-19 J. The value of n for this electron is ________.

What is the wavelength (angstroms)of a photon that has an energy of 4.38 × 10^-18 J?

What is the frequency of light (s^-1)that has a wavelength of 3.12 × 10^-3 cm?

The n = 2 to n = 6 transition in the Bohr hydrogen atom corresponds to the of a photon with a wavelength of nm.