For a proton (mass = 1.673 × 10-27 kg) moving with a velocity of 2.83 × 104 m/s, what is the de Broglie wavelength of the proton (in pm)?

A) 0.356 pm B) 3.56 pm C) 14.0 pm D) 7.15 pm E) 28.5 pm A) 0.356 pm B) 3.56 pm C) 14.0 pm D) 7.15 pm E) 28.5 pm

Exam 7: The Structure of Atoms

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A red laser pointer emits light at a wavelength of 488 nm. If the laser emits 7.5 × 10^-4 J of energy per second in the form of visible radiation, how many photons per second are emitted from the laser?

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Question 1

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According to the Bohr model of the hydrogen atom, the energy necessary to excite an electron from energy level n = 4 to n = 5 is _____ the energy necessary to excite an electron from energy level n = 6 to n = 7.

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Question 2

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For which of the following transitions would a hydrogen atom absorb a photon with the longest wavelength?

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Which of the following regions of the electromagnetic spectrum has the lowest frequency?

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Question 4

The ________ quantum number is given the symbol $m _ { \ell }$ . This quantum number is related to the orientation in space of an orbital.

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Question 5

What is the wavelength of light emitted when an electron in a hydrogen atom undergoes a transition from energy level n = 6 to level n = 1? (c = 3.00 × 10⁸ m/s, h = 6.63 × 10^-34 J·s, R_H = 2.179 × 10^-18 J)

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Question 6

For a proton (mass = 1.673 × 10^-27 kg) moving with a velocity of 2.83 × 10⁴ m/s, what is the de Broglie wavelength of the proton (in pm)?

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Question 7

If the energy of 1.00 mole of photons is 245 kJ, what is the wavelength of the light?

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Question 8

Which of the following is a representation of a 3d_xy orbital?

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Question 9

What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the longest wavelength of light that can eject electrons from the metal is 299.0 nm?

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Question 10

If the de Broglie wavelength of an electron is 44 nm, what is its velocity? (The mass of an electron is 9.11 × 10^-31 kg.)

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Question 11

What type of orbital is designated n = 4, $\ell$ = 2, $m _ { \ell }$ = 2?

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Question 12

What is the wavelength of a photon having a frequency of 54.1 THz? (1 THz = 1015 Hz)

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Question 13

Which type of experiment demonstrates that light has the properties of a particle?

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Question 14

If a hydrogen atom in the excited n = 3 state relaxes to the ground state, what is the maximum number of possible emission lines?

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Question 15

What is the de Broglie wavelength of an electron traveling at 5.18% of the speed of light? (c = 3.00 × 10⁸ m/s, h = 6.63 × 10^-34 J·s, m_e = 9.109 × 10^-31 J)

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Question 16

What is the frequency of gamma ray radiation that has a wavelength of 11.4 pm?

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Question 17

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

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Question 18

Which of the following statements is INCORRECT?

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Question 19

Which of the following properties is associated with the value of the $\ell$ quantum number?

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Question 20

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Exam 7: The Structure of Atoms

A red laser pointer emits light at a wavelength of 488 nm. If the laser emits 7.5 × 10-4 J of energy per second in the form of visible radiation, how many photons per second are emitted from the laser?

According to the Bohr model of the hydrogen atom, the energy necessary to excite an electron from energy level n = 4 to n = 5 is _____ the energy necessary to excite an electron from energy level n = 6 to n = 7.

For which of the following transitions would a hydrogen atom absorb a photon with the longest wavelength?

Which of the following regions of the electromagnetic spectrum has the lowest frequency?

The ________ quantum number is given the symbol mℓm _ { \ell }mℓ​ . This quantum number is related to the orientation in space of an orbital.

What is the wavelength of light emitted when an electron in a hydrogen atom undergoes a transition from energy level n = 6 to level n = 1? (c = 3.00 × 108 m/s, h = 6.63 × 10-34 J·s, RH = 2.179 × 10-18 J)

For a proton (mass = 1.673 × 10-27 kg) moving with a velocity of 2.83 × 104 m/s, what is the de Broglie wavelength of the proton (in pm)?

If the energy of 1.00 mole of photons is 245 kJ, what is the wavelength of the light?

Which of the following is a representation of a 3dxy orbital?

What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the longest wavelength of light that can eject electrons from the metal is 299.0 nm?

If the de Broglie wavelength of an electron is 44 nm, what is its velocity? (The mass of an electron is 9.11 × 10-31 kg.)

What type of orbital is designated n = 4, ℓ\ellℓ = 2, mℓm _ { \ell }mℓ​ = 2?

What is the wavelength of a photon having a frequency of 54.1 THz? (1 THz = 1015 Hz)

Which type of experiment demonstrates that light has the properties of a particle?

If a hydrogen atom in the excited n = 3 state relaxes to the ground state, what is the maximum number of possible emission lines?

What is the de Broglie wavelength of an electron traveling at 5.18% of the speed of light? (c = 3.00 × 108 m/s, h = 6.63 × 10-34 J·s, me = 9.109 × 10-31 J)

What is the frequency of gamma ray radiation that has a wavelength of 11.4 pm?

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

Which of the following statements is INCORRECT?

Which of the following properties is associated with the value of the ℓ\ellℓ quantum number?

Basic Concepts of Chemistry

Lets Review: the Tools of Quantitative Chemistry

Atoms, Molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Solid State

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Chemical Reactivity: Equilibria

Principles of Chemical Reactivity: the Chemistry of Acids and Bases

Principles of Chemical Reactivity: Other Aspects of Aqueous Equilibria

Principles of Chemical Reactivity: Entropy and Free Energy

Principles of Chemical Reactivity: Electron Transfer Reactions

Environmental Chemistry: Earths Environment, Energy, and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

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A red laser pointer emits light at a wavelength of 488 nm. If the laser emits 7.5 × 10^-4 J of energy per second in the form of visible radiation, how many photons per second are emitted from the laser?

The ________ quantum number is given the symbol $m _ { \ell }$ . This quantum number is related to the orientation in space of an orbital.

What is the wavelength of light emitted when an electron in a hydrogen atom undergoes a transition from energy level n = 6 to level n = 1? (c = 3.00 × 10⁸ m/s, h = 6.63 × 10^-34 J·s, R_H = 2.179 × 10^-18 J)

For a proton (mass = 1.673 × 10^-27 kg) moving with a velocity of 2.83 × 10⁴ m/s, what is the de Broglie wavelength of the proton (in pm)?

Which of the following is a representation of a 3d_xy orbital?

If the de Broglie wavelength of an electron is 44 nm, what is its velocity? (The mass of an electron is 9.11 × 10^-31 kg.)

What type of orbital is designated n = 4, $\ell$ = 2, $m _ { \ell }$ = 2?

What is the de Broglie wavelength of an electron traveling at 5.18% of the speed of light? (c = 3.00 × 10⁸ m/s, h = 6.63 × 10^-34 J·s, m_e = 9.109 × 10^-31 J)

Which of the following properties is associated with the value of the $\ell$ quantum number?