Question 1

Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.

Accepted Answer

A) radio,infrared,ultraviolet,gamma rays 
B) radio,ultraviolet,infrared,gamma rays 
C) gamma rays,radio,ultraviolet,infrared 
D) gamma rays,infrared,radio,ultraviolet 
E) gamma rays,ultraviolet,infrared,radio 
A) radio,infrared,ultraviolet,gamma rays 
B) radio,ultraviolet,infrared,gamma rays 
C) gamma rays,radio,ultraviolet,infrared 
D) gamma rays,infrared,radio,ultraviolet 
E) gamma rays,ultraviolet,infrared,radio

Question 2

The interference pattern seen when light passes through narrow,closely spaced slits,is due to

Accepted Answer

A) diffraction. 
B) reflection. 
C) refraction. 
D) dispersion. 
E) deflection. 
A) diffraction. 
B) reflection. 
C) refraction. 
D) dispersion. 
E) deflection.

Question 3

According to the Bohr theory of the hydrogen atom,the minimum energy (in J)needed to ionize a hydrogen atom from the n = 2 state is

Accepted Answer

A) 2.18 $\times$ 10-18 J 
B) 1.64 $\times$ 10-18 J 
C) 5.45 $\times$ 10-19 J 
D) 3.03 $\times$ 10-19 J 
E) None of these choices is correct. 
A) 2.18 $\times$ 10-18 J 
B) 1.64 $\times$ 10-18 J 
C) 5.45 $\times$ 10-19 J 
D) 3.03 $\times$ 10-19 J 
E) None of these choices is correct.

Question 4

The shape of an atomic orbital is associated with

Accepted Answer

A) the principal quantum number (n). 
B) the angular momentum quantum number (l). 
C) the magnetic quantum number (ml). 
D) the spin quantum number (ms). 
E) the magnetic and spin quantum numbers,together. 
A) the principal quantum number (n). 
B) the angular momentum quantum number (l). 
C) the magnetic quantum number (ml). 
D) the spin quantum number (ms). 
E) the magnetic and spin quantum numbers,together.

Question 5

Which scientist demonstrated that photons transferred momentum during collisions with matter?

Accepted Answer

A) Bohr 
B) de Broglie 
C) Planck 
D) Compton 
E) Billiard 
A) Bohr 
B) de Broglie 
C) Planck 
D) Compton 
E) Billiard

Question 6

Continuous spectra are characteristic of heated solids.

Accepted Answer

A) True 
 B)False

Question 7

A radio wave has a frequency of 8.6 $\times$ 108 Hz.What is the energy of one photon of this radiation?

Accepted Answer

A) 7.7 $\times$ 10-43 J 
B) 2.3 $\times$ 10-34 J 
C) 5.7 $\times$ 10-25 J 
D) 1.7 $\times$ 10-16 J 
E) > 10-15 J 
A) 7.7 $\times$ 10-43 J 
B) 2.3 $\times$ 10-34 J 
C) 5.7 $\times$ 10-25 J 
D) 1.7 $\times$ 10-16 J 
E) > 10-15 J

Question 8

Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?

Accepted Answer

A) Planck 
B) Einstein 
C) Bohr 
D) Rydberg 
E) Heisenberg 
A) Planck 
B) Einstein 
C) Bohr 
D) Rydberg 
E) Heisenberg

Question 9

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

Accepted Answer

A) radio,infrared,ultraviolet,gamma rays 
B) radio,ultraviolet,infrared,gamma rays 
C) gamma rays,infrared,radio,ultraviolet 
D) gamma rays,ultraviolet,infrared,radio 
E) infrared,ultraviolet,radio,gamma rays 
A) radio,infrared,ultraviolet,gamma rays 
B) radio,ultraviolet,infrared,gamma rays 
C) gamma rays,infrared,radio,ultraviolet 
D) gamma rays,ultraviolet,infrared,radio 
E) infrared,ultraviolet,radio,gamma rays

Question 10

The de Broglie equation predicts that the wavelength (in m)of a proton moving at 1000.m/s is

Accepted Answer

A) 3.96 $\times$ 10-10 m 
B) 3.96 $\times$ 10-7 m 
C) 2.52 $\times$ 106 m 
D) 2.52 $\times$ 109 m 
E) > 1010 m 
A) 3.96 $\times$ 10-10 m 
B) 3.96 $\times$ 10-7 m 
C) 2.52 $\times$ 106 m 
D) 2.52 $\times$ 109 m 
E) > 1010 m

Question 11

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm.To what energy level does the electron move?

Accepted Answer

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

Question 12

Consider the following adjectives used to describe types of spectrum:
Continuous line atomic emission absorption
How many of them are appropriate to describe the spectrum of radiation absorbed by a sample of mercury vapor?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 13

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4.(R = 1.096776 $\times$ 107 m-1)

Accepted Answer

A) 2.056 $\times$ 106 s-1 
B) 2.742 $\times$ 106 s-1 
C) 6.165 $\times$ 1014 s-1 
D) 8.226 $\times$ 1014 s-1 
E) > 1015 s-1 
A) 2.056 $\times$ 106 s-1 
B) 2.742 $\times$ 106 s-1 
C) 6.165 $\times$ 1014 s-1 
D) 8.226 $\times$ 1014 s-1 
E) > 1015 s-1

Question 14

Platinum,which is widely used as a catalyst,has a work function $\phi$ (the minimum energy needed to eject an electron from the metal surface)of 9.05 $\times$ 10-19 J.What is the longest wavelength of light which will cause electrons to be emitted?

Accepted Answer

A) 2.196 $\times$ 10-7 m 
B) 4.553 $\times$ 10-6 m 
C) 5.654 $\times$ 102 m 
D) 1.370 $\times$ 1015 m 
E) > 106 m 
A) 2.196 $\times$ 10-7 m 
B) 4.553 $\times$ 10-6 m 
C) 5.654 $\times$ 102 m 
D) 1.370 $\times$ 1015 m 
E) > 106 m

Question 15

Other factors being constant,a heavy object will have a longer de Broglie wavelength than a light object.

Accepted Answer

A) True 
 B)False

Question 16

Who developed an empirical equation from which the wavelengths of lines in the spectrum of hydrogen atoms can be calculated?

Accepted Answer

A) Planck 
B) de Broglie 
C) Bohr 
D) Rutherford 
E) Rydberg 
A) Planck 
B) de Broglie 
C) Bohr 
D) Rutherford 
E) Rydberg

Question 17

Consider the following adjectives used to describe types of spectrum:
Continuous line atomic emission absorption
How many of them are appropriate to describe the spectrum of radiation given off by a black body?

Accepted Answer

A) none 
B) one 
C) two 
D) three 
E) four 
A) none 
B) one 
C) two 
D) three 
E) four

Question 18

In the Bohr model of the hydrogen atom,the electron moves in a circular path which Bohr referred to as an orbital.

Accepted Answer

A) True 
 B)False

Question 19

According to the Rydberg equation,the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm)of

Accepted Answer

A) 91.2 nm 
B) 1.10 $\times$ 10-2 nm 
C) 1.10 $\times$ 102 nm 
D) 1.10 $\times$ 1016 nm 
E) None of these choices is correct. 
A) 91.2 nm 
B) 1.10 $\times$ 10-2 nm 
C) 1.10 $\times$ 102 nm 
D) 1.10 $\times$ 1016 nm 
E) None of these choices is correct.

Question 20

Electromagnetic radiation of 500 nm wavelength lies in the ________ region of the spectrum.

Accepted Answer

A) infrared 
B) visible 
C) ultraviolet 
D) X-ray 
E) ($\gamma$-ray) 
A) infrared 
B) visible 
C) ultraviolet 
D) X-ray 
E) ($\gamma$-ray)

Exam 7: Quantum Theory and Atomic Structure

Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases to greatest wavelength.

The interference pattern seen when light passes through narrow,closely spaced slits,is due to

According to the Bohr theory of the hydrogen atom,the minimum energy (in J)needed to ionize a hydrogen atom from the n = 2 state is

The shape of an atomic orbital is associated with

Which scientist demonstrated that photons transferred momentum during collisions with matter?

Continuous spectra are characteristic of heated solids.

A radio wave has a frequency of 8.6 ×\times× 108 Hz.What is the energy of one photon of this radiation?

Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?

Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.

The de Broglie equation predicts that the wavelength (in m)of a proton moving at 1000.m/s is

An electron in the n = 6 level emits a photon with a wavelength of 410.2 nm.To what energy level does the electron move?

Consider the following adjectives used to describe types of spectrum: Continuous line atomic emission absorption How many of them are appropriate to describe the spectrum of radiation absorbed by a sample of mercury vapor?

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4.(R = 1.096776 ×\times× 107 m-1)

Platinum,which is widely used as a catalyst,has a work function ϕ\phiϕ (the minimum energy needed to eject an electron from the metal surface)of 9.05 ×\times× 10-19 J.What is the longest wavelength of light which will cause electrons to be emitted?

Other factors being constant,a heavy object will have a longer de Broglie wavelength than a light object.

Who developed an empirical equation from which the wavelengths of lines in the spectrum of hydrogen atoms can be calculated?

Consider the following adjectives used to describe types of spectrum: Continuous line atomic emission absorption How many of them are appropriate to describe the spectrum of radiation given off by a black body?

In the Bohr model of the hydrogen atom,the electron moves in a circular path which Bohr referred to as an orbital.

According to the Rydberg equation,the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm)of

Electromagnetic radiation of 500 nm wavelength lies in the ________ region of the spectrum.

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

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids,solids,and Phase Changes

The Properties of Solutions

The Main-Group Elements: Applying Principles of Bonding and Structure

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 Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

A radio wave has a frequency of 8.6 $\times$ 10⁸ Hz.What is the energy of one photon of this radiation?

Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n₁ = 2 to n₂ = 4.(R = 1.096776 $\times$ 10⁷ m^-1)

Platinum,which is widely used as a catalyst,has a work function $\phi$ (the minimum energy needed to eject an electron from the metal surface)of 9.05 $\times$ 10^-19 J.What is the longest wavelength of light which will cause electrons to be emitted?