Calculate the wavelength of the spectral line in the spectrum of hydrogen for which n1 = 2 and n2 = 4.Hint: Use the Rydberg equation to solve.

A) 207 nm B) 365 nm C) 486 nm D) 274 nm E) 131 nm A) 207 nm B) 365 nm C) 486 nm D) 274 nm E) 131 nm

Exam 8: The Quantum Mechanical Atom

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What is the speed at which a neutron is travelling if it has a wavelength of 10.0 pm?Hint: You are calculating the speed of the particle for this question, not using the speed of light.

(Multiple Choice)

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Question 121

Given the following sets of quantum numbers for n, l, m_l, and m_s, which one of these sets is not possible for an electron in an atom?

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Question 122

Which statement about a hydrogen atom is false?

(Multiple Choice)

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Question 123

Calculate the energy difference between the two energy levels that are responsible for the line that has a wavelength of 285.2 nm in an emission spectrum of an atom.

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Question 124

Which statement is true?

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Question 125

Which atom has the smallest first ionization energy?

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Question 126

Calculate the frequency of visible light having a wavelength of 464.1 nm.

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Question 127

Which of the following choices is the correct electron configuration for a vanadium atom?

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Question 128

When an atom absorbs energy it moves from its ground state to its ________.

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Question 129

A correct description for the electron configuration of a vanadium atom is

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Question 130

Calculate the wavelength of the spectral line in the spectrum of hydrogen for which n₁ = 2 and n₂ = 4.Hint: Use the Rydberg equation to solve.

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Question 131

It is possible for three of the four quantum numbers to be the same for a pair of electrons.

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Question 132

Based on the aufbau principle and other applicable guiding principles, what electron configuration would one reasonably expect to find for technetium (Z = 43)?

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Question 133

The very narrow band of wavelengths ranging from about 400 to 700 nm is called the ________.

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Question 134

Atomic hydrogen has a single electron, and therefore produces the simplest emission spectrum with the fewest lines.

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Question 135

The values of n for the valence shells of Sb, Ca, I, and Po are, respectively:

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Question 136

What is the frequency of radiation which has an energy of 216.1 kJ per mole of photons?Hint: Pay careful attention to your units. 1 kJ = 1000 J.

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Question 137

Which of the following are expected to be paramagnetic in their ground state electron configurations: S, Ne, Cd, Si, Cl? Hint: Look for unpaired electrons.

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Question 138

The notation for the subshell with n = 5 and l = 3 is

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Question 139

Which atom has the smallest radius?

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Question 140

Showing 121 - 140 of 219

Exam 8: The Quantum Mechanical Atom

What is the speed at which a neutron is travelling if it has a wavelength of 10.0 pm?Hint: You are calculating the speed of the particle for this question, not using the speed of light.

Given the following sets of quantum numbers for n, l, ml, and ms, which one of these sets is not possible for an electron in an atom?

Which statement about a hydrogen atom is false?

Calculate the energy difference between the two energy levels that are responsible for the line that has a wavelength of 285.2 nm in an emission spectrum of an atom.

Which statement is true?

Which atom has the smallest first ionization energy?

Calculate the frequency of visible light having a wavelength of 464.1 nm.

Which of the following choices is the correct electron configuration for a vanadium atom?

When an atom absorbs energy it moves from its ground state to its ________.

A correct description for the electron configuration of a vanadium atom is

Calculate the wavelength of the spectral line in the spectrum of hydrogen for which n1 = 2 and n2 = 4.Hint: Use the Rydberg equation to solve.

It is possible for three of the four quantum numbers to be the same for a pair of electrons.

Based on the aufbau principle and other applicable guiding principles, what electron configuration would one reasonably expect to find for technetium (Z = 43)?

The very narrow band of wavelengths ranging from about 400 to 700 nm is called the ________.

Atomic hydrogen has a single electron, and therefore produces the simplest emission spectrum with the fewest lines.

The values of n for the valence shells of Sb, Ca, I, and Po are, respectively:

What is the frequency of radiation which has an energy of 216.1 kJ per mole of photons?Hint: Pay careful attention to your units. 1 kJ = 1000 J.

Which of the following are expected to be paramagnetic in their ground state electron configurations: S, Ne, Cd, Si, Cl? Hint: Look for unpaired electrons.

The notation for the subshell with n = 5 and l = 3 is

Which atom has the smallest radius?

A Very Brief History of Chemistry

Scientific Measurements

Elements, Compounds, and the Periodic Table

The Mole and Stoichiometry

Molecular View of Reactions in Aqueous Solutions

Oxidation-Reduction Reactions

Energy and Chemical Change

The Basics of Chemical Bonding

Theories of Bonding and Structure

Properties of Gases

Intermolecular Attractions and the Properties of Liquids and Solids

Mixtures at the Molecular Level: Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases, a Molecular Look

Acid-Base Equilibria in Aqueous Solutions

Solubility and Simultaneous Equilibria

Thermodynamics

Electrochemistry

Nuclear Reactions and Their Role in Chemistry

Metal Complexes

Organic Compounds, Polymers, and Biochemicals

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Given the following sets of quantum numbers for n, l, m_l, and m_s, which one of these sets is not possible for an electron in an atom?

Calculate the wavelength of the spectral line in the spectrum of hydrogen for which n₁ = 2 and n₂ = 4.Hint: Use the Rydberg equation to solve.