Exam 28: Atomic Physics

A proton that is moving freely has a wavelength of 0.600 pm.(m_proton = 1.67 × 10^-27 kg,e = 1.60 × 10^-19 C,h = 6.626 × 10^-34 J ∙ s) (a)What is its momentum? (b)What is its speed? (c)What potential difference would it have been accelerated through,starting from rest,to reach this speed?

(Short Answer)

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Question 121

For an electron in the M (n = 3)shell,find (a)the largest possible orbital angular momentum it can have,and (b)the smallest possible orbital angular momentum it can have.Express your answers in SI units,and for each case indicate the subshell (s,p,d,...)of the electron.(h = 6.626 × 10^-34 J ∙ s)

(Short Answer)

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Question 122

Atoms in crystals are typically separated by distances of 0.10 nm.What kinetic energy must a nonrelativistic electron have,in electron-volts,in order to have a wavelength of 0.10 nm? (m_electron = 9.11 × 10^-31 kg,1 eV = 1.60 × 10^-19 J,h = 6.626 × 10^-34 J ∙ s)

(Short Answer)

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Question 123

If the wavelength of a photon in vacuum is the same as the de Broglie wavelength of an electron,which one is traveling faster through space?

(Multiple Choice)

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Question 124

What is the energy required to remove the electron from a hydrogen atom in the n = 11 state?

(Multiple Choice)

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Question 125

What is the shortest wavelength of the Lyman series?

(Multiple Choice)

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Question 126

The elements in the periodic table that have completely filled shells or subshells are referred to as

(Multiple Choice)

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Question 127

If the de Broglie wavelength of an electron is 380 nm,what is the speed of this electron? (m_electron = 9.11 × 10^-31 kg,h = 6.626 × 10^-34 J ∙ s)

(Multiple Choice)

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Question 128

What is the electron configuration for Li,which has 3 electrons?

(Multiple Choice)

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Question 129

If the maximum possible accuracy in measuring the energy of a particle increases,the maximum possible accuracy in measuring its lifetime will

(Multiple Choice)

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Question 130

The figure shows part of the energy level diagram of a certain atom.The energy spacing between levels 1 and 2 is twice that between 2 and 3.If an electron makes a transition from level 3 to level 2,the radiation of wavelength λ is emitted.What possible radiation wavelengths might be produced by other transitions between the three energy levels?

(Multiple Choice)

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Question 131

According to the quantum mechanical model of the hydrogen atom,if the orbital angular momentum quantum number is ℓ,there will be how many permitted magnetic quantum numbers?

(Multiple Choice)

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Question 132

Which of the following actions will increase the de Broglie wavelength of a speck of dust? (There could be more than one correct choice.)

(Multiple Choice)

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Question 133

An electron is moving with the speed of 1780 m/s.What is its de Broglie wavelength? (m_electron = 9.11 × 10^-31 kg,h = 6.626 × 10^-34 J ∙ s)

(Multiple Choice)

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Question 134

The wavelength of the emitted photon when a hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values? (c = 3.0 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19J)

(Multiple Choice)

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Question 135

An electron is accelerated from rest through a potential difference.After acceleration the electron has a wavelength of 880 nm.What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10^-34J ∙ s,m_electron = 9.11 × 10-31 kg,e = 1.6 10^-19C)

(Multiple Choice)

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Question 136

If light excites atomic hydrogen from its lowest energy level to the n = 12 level,what is the energy of the photons of this light?

(Multiple Choice)

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Question 137

For the ground state of the hydrogen atom,which of the following numbers represents the correct value of the orbital angular momentum quantum number?

(Multiple Choice)

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Question 138

Light shines through atomic hydrogen gas that was initially in its ground state.You observe that after awhile much of the hydrogen gas has been excited to its n = 5 state.What wavelength of light entering the gas caused this excitation? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19J)

(Multiple Choice)

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Question 139

The orbital angular momentum quantum number ℓ can have any integer value ranging from

(Multiple Choice)

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Question 140

Showing 121 - 140 of 141

Exam 28: Atomic Physics

A proton that is moving freely has a wavelength of 0.600 pm.(mproton = 1.67 × 10-27 kg,e = 1.60 × 10-19 C,h = 6.626 × 10-34 J ∙ s) (a)What is its momentum? (b)What is its speed? (c)What potential difference would it have been accelerated through,starting from rest,to reach this speed?

For an electron in the M (n = 3)shell,find (a)the largest possible orbital angular momentum it can have,and (b)the smallest possible orbital angular momentum it can have.Express your answers in SI units,and for each case indicate the subshell (s,p,d,...)of the electron.(h = 6.626 × 10-34 J ∙ s)

Atoms in crystals are typically separated by distances of 0.10 nm.What kinetic energy must a nonrelativistic electron have,in electron-volts,in order to have a wavelength of 0.10 nm? (melectron = 9.11 × 10-31 kg,1 eV = 1.60 × 10-19 J,h = 6.626 × 10-34 J ∙ s)

If the wavelength of a photon in vacuum is the same as the de Broglie wavelength of an electron,which one is traveling faster through space?

What is the energy required to remove the electron from a hydrogen atom in the n = 11 state?

What is the shortest wavelength of the Lyman series?

The elements in the periodic table that have completely filled shells or subshells are referred to as

If the de Broglie wavelength of an electron is 380 nm,what is the speed of this electron? (melectron = 9.11 × 10-31 kg,h = 6.626 × 10-34 J ∙ s)

What is the electron configuration for Li,which has 3 electrons?

If the maximum possible accuracy in measuring the energy of a particle increases,the maximum possible accuracy in measuring its lifetime will

According to the quantum mechanical model of the hydrogen atom,if the orbital angular momentum quantum number is ℓ,there will be how many permitted magnetic quantum numbers?

Which of the following actions will increase the de Broglie wavelength of a speck of dust? (There could be more than one correct choice.)

An electron is moving with the speed of 1780 m/s.What is its de Broglie wavelength? (melectron = 9.11 × 10-31 kg,h = 6.626 × 10-34 J ∙ s)

The wavelength of the emitted photon when a hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values? (c = 3.0 × 108 m/s,h = 6.626 × 10-34 J ∙ s,1 eV = 1.60 × 10-19 J)

An electron is accelerated from rest through a potential difference.After acceleration the electron has a wavelength of 880 nm.What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10-34 J ∙ s,melectron = 9.11 × 10-31 kg,e = 1.6 10-19 C)

If light excites atomic hydrogen from its lowest energy level to the n = 12 level,what is the energy of the photons of this light?

For the ground state of the hydrogen atom,which of the following numbers represents the correct value of the orbital angular momentum quantum number?

The orbital angular momentum quantum number ℓ can have any integer value ranging from

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A proton that is moving freely has a wavelength of 0.600 pm.(m_proton = 1.67 × 10^-27 kg,e = 1.60 × 10^-19 C,h = 6.626 × 10^-34 J ∙ s) (a)What is its momentum? (b)What is its speed? (c)What potential difference would it have been accelerated through,starting from rest,to reach this speed?

For an electron in the M (n = 3)shell,find (a)the largest possible orbital angular momentum it can have,and (b)the smallest possible orbital angular momentum it can have.Express your answers in SI units,and for each case indicate the subshell (s,p,d,...)of the electron.(h = 6.626 × 10^-34 J ∙ s)

Atoms in crystals are typically separated by distances of 0.10 nm.What kinetic energy must a nonrelativistic electron have,in electron-volts,in order to have a wavelength of 0.10 nm? (m_electron = 9.11 × 10^-31 kg,1 eV = 1.60 × 10^-19 J,h = 6.626 × 10^-34 J ∙ s)

If the de Broglie wavelength of an electron is 380 nm,what is the speed of this electron? (m_electron = 9.11 × 10^-31 kg,h = 6.626 × 10^-34 J ∙ s)

An electron is moving with the speed of 1780 m/s.What is its de Broglie wavelength? (m_electron = 9.11 × 10^-31 kg,h = 6.626 × 10^-34 J ∙ s)

The wavelength of the emitted photon when a hydrogen atom makes a transition from the n = 2 state to the ground state is closest to which of the following values? (c = 3.0 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19J)

An electron is accelerated from rest through a potential difference.After acceleration the electron has a wavelength of 880 nm.What is the potential difference responsible for the acceleration of the electron? (h = 6.626 × 10^-34J ∙ s,m_electron = 9.11 × 10-31 kg,e = 1.6 10^-19C)