Question 1

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10-24 g; h = 6.626 * 10-34 J.s)

Accepted Answer

A)  16 pm
B)  0.016 nm
C)  0.16 nm
D)  160 nm
E)  1.6 * 10-4 mF) C) and D)
G) None of the above

Question 2

If we take away two electrons from the outer shell of calcium, it would have the same electron configuration as what element?

Accepted Answer

The answer of If we take away two electrons from...

Question 3

The electron configuration of a ground-state vanadium atom is

Accepted Answer

A)  [Ar]4s24d3
B)  [Ar]4s24p3
C)  [Ar]4s23d3
D)  [Ar]3d5E) None of the above
F) A) and B)

Question 4

The ground-state electron configuration for an atom of indium is

Accepted Answer

A)  [Kr]5s24p64d5
B)  [Ar]4s23d104p1
C)  [Ar]4s24p63d5
D)  [Kr]5s25p64d5
E)  [Kr]5s24d105p1F) A) and B)
G) A) and C)

Question 5

A ground-state atom of manganese has ___ unpaired electrons and is _____.

Accepted Answer

A)  0, diamagnetic
B)  2, diamagnetic
C)  3, paramagnetic
D)  5, paramagnetic
E)  7, paramagneticF) C) and E)
G) B) and D)

Question 6

Which of the following is the electron configuration of an excited state of an iron atom?

Accepted Answer

A)  [Ar]4s23d7
B)  [Ar]4s23d6
C)  [Ar]4s23d8
D)  [Ar]4s13d7
E)  [Ar]4s13d5F) A) and C)
G) A) and B)

Question 7

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Accepted Answer

A)  2
B)  3
C)  4
D)  6
E)  8F) C) and D)
G) A) and B)

Question 8

How many electrons in a ground-state tellurium atom are in orbitals labeled by l = 1?

Accepted Answer

A)  4
B)  10
C)  12
D)  16
E)  22F) A) and B)
G) A) and C)

Question 9

A neon atom in its ground state will be diamagnetic.

Accepted Answer

A) True 
 B)False

Question 10

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 *10 -18 J(1/n2)

Accepted Answer

A)  3.08 * 1015 /s
B)  1.03 * 108 /s
C)  2.06 * 1014 /s
D)  1.35 * 10-51 /s
E)  8.22 * 1014 /sF) None of the above
G) C) and D)

Question 11

The scattering of helium atoms by a solid can be used to gain information about the lattice of atoms, provided the wavelength of the helium atoms is comparable to the dimensions of the lattice.What is the wavelength, in picometers, of a helium-4 atom with a kinetic energy of 0.10 eV.(mass of 4He = 4.0026 amu; 1 amu = 1.67 * 10-24 g; 1 eV = 1.602 * 10-19 J; h = 6.626 * 10-34 J.s)

Accepted Answer

The answer of The scattering of helium atoms by a...

Question 12

Calculate the frequency of visible light having a wavelength of 686 nm.

Accepted Answer

A)  4.37 * 1014 /s
B)  4.37 * 105 /s
C)  6.17 * 1014 /s
D)  2.29 * 10-15 /s
E)  2.29 * 10-6 /sF) C) and D)
G) C) and E)

Question 13

If a hydrogen atom and a helium atom have the same kinetic energy,

Accepted Answer

A)  the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom.
B)  the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium.
C)  the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom.
D)  the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom.
E)  the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom.F) B) and C)
G) B) and D)

Question 14

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Accepted Answer

A)  5.7 * 10-4 m
B)  9.5 * 10-31 m
C)  2.8 * 10-7 m
D)  9.5 * 10-28 m
E)  5.7 * 10-7 mF) A) and C)
G) A) and B)

Question 15

Which one of the following sets of quantum numbers is not possible?

Accepted Answer

The answer of Which one of the following sets of...

Question 16

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 * 108 m/s; h = 6.626 * 10-34 J0s)

Accepted Answer

A)  2.70 * 10-43 J
B)  5.43 * 10-33 J
C)  1.63 * 10-24 J
D)  4.07 * 10-10 J
E)  2.46 * 109 JF) B) and C)
G) A) and E)

Question 17

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

Accepted Answer

6.4 * 10<s...

Question 18

The bonds of oxygen molecules are broken by sunlight.The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol. What is the wavelength of sunlight that can cause this bond breakage?

Accepted Answer

The answer of The bonds of oxygen molecules are broken...

Question 19

What is the wavelength of radiation that has a frequency of 2.10 *1014 s -1?

Accepted Answer

A)  6.30 * 1022 m
B)  7.00 * 102 nm
C)  7.00 * 105 m
D)  1.43 * 10-6 m
E)  3.00 * 108 mF) D) and E)
G) A) and E)

Question 20

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Accepted Answer

A)  1
B)  3
C)  5
D)  7
E)  9F) A) and E)
G) C) and E)

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Correct Answer
verified

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen E_n = -2.18 *10^-18 J(1/n²)

Correct Answer
verified

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10^-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10^-27 kg)

Correct Answer
verified
6.4 * 10
View Answer

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 * 10⁸ m/s; h = 6.626 * 10^-34 J0s)

Correct Answer
verified

Which one of the following sets of quantum numbers is not possible?

Correct Answer
verified

Calculate the frequency of visible light having a wavelength of 686 nm.

Correct Answer
verified

If a hydrogen atom and a helium atom have the same kinetic energy,

Correct Answer
verified

How many electrons in a ground-state tellurium atom are in orbitals labeled by l = 1?

Correct Answer
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What is the wavelength of radiation that has a frequency of 2.10 *10¹⁴ s^-1?

Correct Answer
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A ground-state atom of manganese has _ unpaired electrons and is ___.

Correct Answer
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The ground-state electron configuration for an atom of indium is

Correct Answer
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How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Correct Answer
verified

The bonds of oxygen molecules are broken by sunlight.The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol. What is the wavelength of sunlight that can cause this bond breakage?

Correct Answer
verified

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Correct Answer
verified

A neon atom in its ground state will be diamagnetic.

Correct Answer
verified

Which of the following is the electron configuration of an excited state of an iron atom?

Correct Answer
verified

If we take away two electrons from the outer shell of calcium, it would have the same electron configuration as what element?

Correct Answer
verified

The electron configuration of a ground-state vanadium atom is

Correct Answer
verified

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Correct Answer
verified

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10^-24 g; h = 6.626 * 10^-34 J.s)

Correct Answer
verified

Exam 7: Quantum Theory and the Electronic Structure of Atoms

Correct AnswerverifiedShow Answer

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 *10 -18 J(1/n2)

Correct AnswerverifiedShow Answer

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

Correct Answerverified6.4 * 10View AnswerShow Answer

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 * 108 m/s; h = 6.626 * 10-34 J0s)

Correct AnswerverifiedShow Answer

Which one of the following sets of quantum numbers is not possible?

Correct AnswerverifiedShow Answer

Calculate the frequency of visible light having a wavelength of 686 nm.

Correct AnswerverifiedShow Answer

If a hydrogen atom and a helium atom have the same kinetic energy,

Correct AnswerverifiedShow Answer

How many electrons in a ground-state tellurium atom are in orbitals labeled by l = 1?

Correct AnswerverifiedShow Answer

What is the wavelength of radiation that has a frequency of 2.10 *1014 s -1?

Correct AnswerverifiedShow Answer

A ground-state atom of manganese has ___ unpaired electrons and is _____.

Correct AnswerverifiedShow Answer

The ground-state electron configuration for an atom of indium is

Correct AnswerverifiedShow Answer

How many orbitals are allowed in a subshell if the angular momentum quantum number for electrons in that subshell is 3?

Correct AnswerverifiedShow Answer

The bonds of oxygen molecules are broken by sunlight.The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol. What is the wavelength of sunlight that can cause this bond breakage?

Correct AnswerverifiedShow Answer

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 and 97.2 nm. What is the quantum number of the initial excited energy level from which the electron falls?

Correct AnswerverifiedShow Answer

A neon atom in its ground state will be diamagnetic.

Correct AnswerverifiedShow Answer

Which of the following is the electron configuration of an excited state of an iron atom?

Correct AnswerverifiedShow Answer

If we take away two electrons from the outer shell of calcium, it would have the same electron configuration as what element?

Correct AnswerverifiedShow Answer

The electron configuration of a ground-state vanadium atom is

Correct AnswerverifiedShow Answer

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Correct AnswerverifiedShow Answer

Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10-24 g; h = 6.626 * 10-34 J.s)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen E_n = -2.18 *10^-18 J(1/n²)

Correct Answer
verified

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10^-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10^-27 kg)

Correct Answer
verified
6.4 * 10
View Answer

What is the energy in joules of one photon of microwave radiation with a wavelength 0.122 m? (c = 2.9979 * 10⁸ m/s; h = 6.626 * 10^-34 J0s)

Correct Answer
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What is the wavelength of radiation that has a frequency of 2.10 *10¹⁴ s^-1?

Correct Answer
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A ground-state atom of manganese has _ unpaired electrons and is ___.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Calculate the wavelength of a neutron that has a velocity of 250 cm/s. (The mass of a neutron = 1.675 * 10^-24 g; h = 6.626 * 10^-34 J.s)

Correct Answer
verified