Question 1

Which of the following statements is TRUE?

Accepted Answer

A)  The principal quantum number (n) describes the shape of an orbital. 
B)  The angular momentum quantum number (l) describes the the size and energy associated with an orbital. 
C)  The magnetic quantum number (ml) describes the orientation of the orbital. 
D)  An orbital is the path that an electron follows during its movement in an atom. 
E)  All of the above are true. 
A)  The principal quantum number (n) describes the shape of an orbital. 
B)  The angular momentum quantum number (l) describes the the size and energy associated with an orbital. 
C)  The magnetic quantum number (ml) describes the orientation of the orbital. 
D)  An orbital is the path that an electron follows during its movement in an atom. 
E)  All of the above are true.

Question 2

For a hydrogen atom,which electronic transition would result in the emission of a photon with the highest energy?

Accepted Answer

A)  2s → 3p 
B)  2p → 6d 
C)  4p → 2s 
D)  5f → 3d 
A)  2s → 3p 
B)  2p → 6d 
C)  4p → 2s 
D)  5f → 3d

Question 3

How many different values of ml are possible in the 5p sublevel?

Accepted Answer

A)  2 
B)  0 
C)  3 
D)  6 
E)  8 
A)  2 
B)  0 
C)  3 
D)  6 
E)  8

Question 4

When waves of equal amplitude from two sources are in phase when they interact,it is called

Accepted Answer

A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude. 
A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude.

Question 5

Which of the following occurs as the energy of a photon increases?

Accepted Answer

A)  The frequency decreases. 
B)  The speed increases. 
C)  Planck's constant increases. 
D)  The frequency increases. 
E)  None of the above occurs as the energy of a photon increases. 
A)  The frequency decreases. 
B)  The speed increases. 
C)  Planck's constant increases. 
D)  The frequency increases. 
E)  None of the above occurs as the energy of a photon increases.

Question 6

An FM radio station broadcasts electromagnetic radiation at a frequency of 101.2 MHz.The wavelength of this radiation is ________ m.

Accepted Answer

A)  2.964 × 106 
B)  2.964 
C)  3.036 × 1016 
D)  3.036 × 1010 
E)  0.3373 
A)  2.964 × 106 
B)  2.964 
C)  3.036 × 1016 
D)  3.036 × 1010 
E)  0.3373

Question 7

Why do atoms only emit certain wavelengths of light when they are excited? (Why do line spectra exist?)

Accepted Answer

The energies of atoms are quantized.When

Question 8

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 680 nm.

Accepted Answer

A)  2.27 × 1014 s-1 
B)  3.80 × 1014 s-1 
C)  4.41 × 1014 s-1 
D)  5.05 × 1014 s-1 
E)  3.40 × 1014 s-1 
A)  2.27 × 1014 s-1 
B)  3.80 × 1014 s-1 
C)  4.41 × 1014 s-1 
D)  5.05 × 1014 s-1 
E)  3.40 × 1014 s-1

Question 9

Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye.The frequency of this light is ________ s-1.

Accepted Answer

A)  4.688 × 1014 
B)  4.688 × 105 
C)  1.920 × 102 
D)  1.920 × 1011 
E)  2.133 × 10-15 
A)  4.688 × 1014 
B)  4.688 × 105 
C)  1.920 × 102 
D)  1.920 × 1011 
E)  2.133 × 10-15

Question 10

For n = 3,what are the possible values for l?

Accepted Answer

A)  0 
B)  0, 1 
C)  0, 1, 2 
D)  0, 1, 2, 3 
A)  0 
B)  0, 1 
C)  0, 1, 2 
D)  0, 1, 2, 3

Question 11

How many photons are contained in a flash of green light (525 nm)that contains 189 kJ of energy?

Accepted Answer

A)  5.67 × 1023 photons 
B)  2.01 × 1024 photons 
C)  1.25 × 1031 photons 
D)  4.99 × 1023 photons 
E)  7.99 × 1030 photons 
A)  5.67 × 1023 photons 
B)  2.01 × 1024 photons 
C)  1.25 × 1031 photons 
D)  4.99 × 1023 photons 
E)  7.99 × 1030 photons

Question 12

What total energy (in kJ)is contained in 1.0 mol of photons,all with a frequency of 2.75 × 1014 Hz?

Accepted Answer

A)  182 kJ 
B)  219 kJ 
C)  457 kJ 
D)  326 kJ 
E)  110 kJ 
A)  182 kJ 
B)  219 kJ 
C)  457 kJ 
D)  326 kJ 
E)  110 kJ

Question 13

Describe how a neon light works.

Accepted Answer

A neon sign contains glass tub

Question 14

Calculate the wavelength of an electron (m = 9.11 × 10-28 g)moving at 3.66 × 106 m/s.

Accepted Answer

A)  1.99 × 10-10 m 
B)  5.03 × 10-10 m 
C)  1.81 × 10-10 m 
D)  5.52 × 10-9 m 
E)  2.76 × 10-9 m 
A)  1.99 × 10-10 m 
B)  5.03 × 10-10 m 
C)  1.81 × 10-10 m 
D)  5.52 × 10-9 m 
E)  2.76 × 10-9 m

Question 15

When waves of equal amplitude from two sources are out of phase when they interact,it is called

Accepted Answer

A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude. 
A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude.

Question 16

When a wave encounters an obstacle or a slit that is comparable in size to its wavelength,it bends around it.This characteristic is called

Accepted Answer

A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude. 
A)  destructive interference. 
B)  diffraction. 
C)  constructive interference. 
D)  effusion. 
E)  amplitude.

Question 17

Which of the following occurs as the wavelength of a photon increases?

Accepted Answer

A)  The frequency decreases. 
B)  The energy increases. 
C)  The speed decreases. 
D)  Planck's constant increases. 
E)  None of the above occurs as the wavelength of a photon increases. 
A)  The frequency decreases. 
B)  The energy increases. 
C)  The speed decreases. 
D)  Planck's constant increases. 
E)  None of the above occurs as the wavelength of a photon increases.

Question 18

On the electromagnetic spectrum,visible light is immediately between two other wavelengths.Name them.

Accepted Answer

A)  infrared and gamma ray 
B)  radio and gamma ray 
C)  gamma ray and ultraviolet x-ray 
D)  microwave and ultraviolet x-ray 
E)  infrared and ultraviolet 
A)  infrared and gamma ray 
B)  radio and gamma ray 
C)  gamma ray and ultraviolet x-ray 
D)  microwave and ultraviolet x-ray 
E)  infrared and ultraviolet

Question 19

Which of the following transitions represent the emission of a photon with the largest energy?

Accepted Answer

A)  n = 2 to n = 1 
B)  n = 3 to n = 1 
C)  n = 6 to n = 3 
D)  n = 1 to n = 4 
E)  n = 2 to n = 3 
A)  n = 2 to n = 1 
B)  n = 3 to n = 1 
C)  n = 6 to n = 3 
D)  n = 1 to n = 4 
E)  n = 2 to n = 3

Question 20

When an electric current is passed through a tube containing helium,helium atoms absorb some of the electrical energy and reemit it as a ________ color.

Accepted Answer

A)  white 
B)  yellow 
C)  violet 
D)  blue 
E)  red 
A)  white 
B)  yellow 
C)  violet 
D)  blue 
E)  red

Exam 7: The Quantum-Mechanical Model of the Atom

Which of the following statements is TRUE?

For a hydrogen atom,which electronic transition would result in the emission of a photon with the highest energy?

How many different values of ml are possible in the 5p sublevel?

When waves of equal amplitude from two sources are in phase when they interact,it is called

Which of the following occurs as the energy of a photon increases?

An FM radio station broadcasts electromagnetic radiation at a frequency of 101.2 MHz.The wavelength of this radiation is ________ m.

Why do atoms only emit certain wavelengths of light when they are excited? (Why do line spectra exist?)

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 680 nm.

Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye.The frequency of this light is ________ s-1.

For n = 3,what are the possible values for l?

How many photons are contained in a flash of green light (525 nm)that contains 189 kJ of energy?

What total energy (in kJ)is contained in 1.0 mol of photons,all with a frequency of 2.75 × 1014 Hz?

Describe how a neon light works.

Calculate the wavelength of an electron (m = 9.11 × 10-28 g)moving at 3.66 × 106 m/s.

When waves of equal amplitude from two sources are out of phase when they interact,it is called

When a wave encounters an obstacle or a slit that is comparable in size to its wavelength,it bends around it.This characteristic is called

Which of the following occurs as the wavelength of a photon increases?

On the electromagnetic spectrum,visible light is immediately between two other wavelengths.Name them.

Which of the following transitions represent the emission of a photon with the largest energy?

When an electric current is passed through a tube containing helium,helium atoms absorb some of the electrical energy and reemit it as a ________ color.

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many different values of m_l are possible in the 5p sublevel?

Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye.The frequency of this light is ________ s^-1.

What total energy (in kJ)is contained in 1.0 mol of photons,all with a frequency of 2.75 × 10¹⁴ Hz?

Calculate the wavelength of an electron (m = 9.11 × 10^-28 g)moving at 3.66 × 10⁶ m/s.