Question 1

What value of l is represented by an f orbital?

Accepted Answer

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

Question 2

Define diffraction.

Accepted Answer

When a wave encounters an obst

Question 3

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 4

How many different values of l are possible in the third principal level?

Accepted Answer

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

Question 5

What are the possible values of l if n = 2?

Accepted Answer

A)  2 
B)  0 or 1 
C)  -4, -3, -2, -1, 0, +1, +2, +3, or +4 
D)  -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5 
A)  2 
B)  0 or 1 
C)  -4, -3, -2, -1, 0, +1, +2, +3, or +4 
D)  -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5

Question 6

What is the photoelectric effect?

Accepted Answer

Many metals emit electrons whe

Question 7

Determine the velocity of a medicine ball (m = 10.0 kg)with a wavelength of 1.33 × 10-35 m.

Accepted Answer

A)  8.81 m/s 
B)  12.3 m/s 
C)  2.21 m/s 
D)  4.98 m/s 
E)  6.44 m/s 
A)  8.81 m/s 
B)  12.3 m/s 
C)  2.21 m/s 
D)  4.98 m/s 
E)  6.44 m/s

Question 8

Place the following types of electromagnetic radiation in order of increasing frequency. x-rays infrared light gamma rays

Accepted Answer

A)  infrared light < x-rays < gamma rays 
B)  gamma rays < x-rays < infrared light 
C)  infrared light < gamma rays < x-rays 
D)  gamma rays < infrared light < x-rays 
E)  x-rays < gamma rays < infrared light 
A)  infrared light < x-rays < gamma rays 
B)  gamma rays < x-rays < infrared light 
C)  infrared light < gamma rays < x-rays 
D)  gamma rays < infrared light < x-rays 
E)  x-rays < gamma rays < infrared light

Question 9

How many orbitals are there in the seventh shell?

Accepted Answer

A)  6 
B)  7 
C)  21 
D)  49 
A)  6 
B)  7 
C)  21 
D)  49

Question 10

Calculate the wavelength of light associated with the transition from   in the hydrogen atom.

Accepted Answer

A)  103 nm 
B)  155 nm 
C)  646 nm 
D)  971 nm 
E)  136 nm 
A)  103 nm 
B)  155 nm 
C)  646 nm 
D)  971 nm 
E)  136 nm

Question 11

Which of the following transitions (in a hydrogen atom)represent absorption of the smallest frequency photon?

Accepted Answer

A)  n = 5 to n = 6 
B)  n = 5 to n = 1 
C)  n = 3 to n = 1 
D)  n = 1 to n = 4 
E)  n = 1 to n = 2 
A)  n = 5 to n = 6 
B)  n = 5 to n = 1 
C)  n = 3 to n = 1 
D)  n = 1 to n = 4 
E)  n = 1 to n = 2

Question 12

Which of the following statements is TRUE?

Accepted Answer

A)  The emission spectrum of a particular element is always the same and can be used to identify the element. 
B)  Part of the Bohr model proposed that electrons in the hydrogen atom are located in "stationary states" or particular orbits around the nucleus. 
C)  The uncertainty principle states that we can never know both the exact location and speed of an electron. 
D)  An orbital is the volume in which we are most likely to find an electron. 
E)  All of the above are true. 
A)  The emission spectrum of a particular element is always the same and can be used to identify the element. 
B)  Part of the Bohr model proposed that electrons in the hydrogen atom are located in "stationary states" or particular orbits around the nucleus. 
C)  The uncertainty principle states that we can never know both the exact location and speed of an electron. 
D)  An orbital is the volume in which we are most likely to find an electron. 
E)  All of the above are true.

Question 13

In which orbital below would an electron (on average)be farthest from the nucleus?

Accepted Answer

A)  1s 
B)  5f 
C)  3s 
D)  3d 
E)  2p 
A)  1s 
B)  5f 
C)  3s 
D)  3d 
E)  2p

Question 14

Which of the following visible colors of light has the longest wavelength?

Accepted Answer

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

Question 15

How many subshells are there in the shell with n = 2?

Accepted Answer

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

Question 16

Calculate the energy change associated with the transition from   in the hydrogen atom.

Accepted Answer

A)  +5.35 × 10-19 J 
B)  -1.83 × 10-19 J 
C)  -2.42 × 10-19 J 
D)  -4.31 × 10-19 J 
E)  +6.86 × 10-19 J 
A)  +5.35 × 10-19 J 
B)  -1.83 × 10-19 J 
C)  -2.42 × 10-19 J 
D)  -4.31 × 10-19 J 
E)  +6.86 × 10-19 J

Question 17

Determine the end (final)value of n in a hydrogen atom transition,if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 1014 Hz.

Accepted Answer

A)  3 
B)  1 
C)  4 
D)  6 
E)  7 
A)  3 
B)  1 
C)  4 
D)  6 
E)  7

Question 18

The de Broglie wavelength of an electron with a velocity of 7.40 × 106 m/s is ________ m.The mass of the electron is 9.11 ×   g.

Accepted Answer

A)  1.02 × 1010 
B)  1.02 × 1013 
C)  9.83 × 10-17 
D)  9.83 × 10-14 
E)  9.83 × 10-11 
A)  1.02 × 1010 
B)  1.02 × 1013 
C)  9.83 × 10-17 
D)  9.83 × 10-14 
E)  9.83 × 10-11

Question 19

Which of the following quantum numbers describes the orientation of an orbital?

Accepted Answer

A)  magnetic quantum number 
B)  principal quantum number 
C)  angular momentum quantum number 
D)  spin quantum number 
E)  Schrödinger quantum number 
A)  magnetic quantum number 
B)  principal quantum number 
C)  angular momentum quantum number 
D)  spin quantum number 
E)  Schrödinger quantum number

Question 20

How many orbitals are contained in the third principal level (n = 3)of a given atom?

Accepted Answer

A)  9 
B)  3 
C)  18 
D)  7 
E)  5 
A)  9 
B)  3 
C)  18 
D)  7 
E)  5

Exam 3: The Quantum Mechanical Model of the Atom

What value of l is represented by an f orbital?

Define diffraction.

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

How many different values of l are possible in the third principal level?

What are the possible values of l if n = 2?

What is the photoelectric effect?

Determine the velocity of a medicine ball (m = 10.0 kg)with a wavelength of 1.33 × 10-35 m.

Place the following types of electromagnetic radiation in order of increasing frequency. x-rays infrared light gamma rays

How many orbitals are there in the seventh shell?

Calculate the wavelength of light associated with the transition from in the hydrogen atom.

Which of the following transitions (in a hydrogen atom)represent absorption of the smallest frequency photon?

Which of the following statements is TRUE?

In which orbital below would an electron (on average)be farthest from the nucleus?

Which of the following visible colors of light has the longest wavelength?

How many subshells are there in the shell with n = 2?

Calculate the energy change associated with the transition from in the hydrogen atom.

Determine the end (final)value of n in a hydrogen atom transition,if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 1014 Hz.

The de Broglie wavelength of an electron with a velocity of 7.40 × 106 m/s is ________ m.The mass of the electron is 9.11 × g.

Which of the following quantum numbers describes the orientation of an orbital?

How many orbitals are contained in the third principal level (n = 3)of a given atom?

Essentials: Units, Measurements, and Problem Solving

Atoms

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline 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

Transition Metals and Coordination Compounds

Filters

Determine the velocity of a medicine ball (m = 10.0 kg)with a wavelength of 1.33 × 10^-35 m.

Determine the end (final)value of n in a hydrogen atom transition,if the electron starts in n = 2 and the atom absorbs a photon of light with a frequency of 4.57 × 10¹⁴ Hz.

The de Broglie wavelength of an electron with a velocity of 7.40 × 10⁶ m/s is ________ m.The mass of the electron is 9.11 × g.