Question 1

The wavelength of light emitted from a traffic light having a frequency of 5.75 × 10¹⁴ Hz is __________. A)702 nm B)641 nm C)674 nm D)522 nm E)583 nm

Accepted Answer

D

Question 2

The de Broglie wavelength of a 6.0 gram bullet traveling at the speed of sound is __________. The speed of sound is 331 m/sec. A)2.7 × 10^-34 m B)3.3 × 10^-34 m C)3.35 × 10^-33m D)2.7 × 10^-37 m E)6.6 × 10^-31 m

Accepted Answer

B

Question 3

Which one of the following is an incorrect subshell notation?
A)4f
B)2d
C)3s
D)2p
E)3d

Accepted Answer

The correct subshell notations are based on the principal quantum number (n), which represents the energy level of an electron, and the azimuthal quantum number (l), which represents the shape of the electron's orbital. The subshell notations are written as n followed by a letter corresponding to the value of l: s (0), p (1), d (2), f (3), etc. The letter "d" corresponds to l = 2, which is not a valid value for n = 2. Therefore, option B is incorrect.

Question 4

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?
A)4f
B)4d
C)4p
D)4s
E)none of the above

Accepted Answer

The angular momentum quantum number (l) can range from 0 to n-1, where n is the principal quantum number. For n=4, l can be 0 (s), 1 (p), 2 (d), or 3 (f), meaning all listed subshells (4s, 4p, 4d, 4f) are possible.

Question 5

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?
A)2d
B)2s
C)2p
D)all of the above
E)none of the above

Accepted Answer

The constraint on the angular momentum quantum number only allows for subshells with L values ranging from 0 to n-1. Therefore, the 2d subshell (which would have an L value of 2) does not exist, and option A is the correct answer. Both 2s and 2p subshells do exist, as they have L values of 0 and 1 respectively.

Question 6

The de Broglie wavelength of a __________ will have the shortest wavelength when traveling at 30 cm/s.
A)marble
B)car
C)planet
D)uranium atom
E)hydrogen atom

Accepted Answer

The answer of The de Broglie wavelength of a __________...

Question 7

All of the orbitals in a given electron shell have the same value of the __________ quantum number.
A)principal
B)angular momentum
C)magnetic
D)spin
E)psi

Accepted Answer

The principal quantum number determines the energy level or shell of an electron. All of the orbitals within a particular electron shell have the same principal quantum number. The angular momentum quantum number, magnetic quantum number, and spin quantum number all vary between different orbitals within the same electron shell. Psi is not a quantum number, but rather a mathematical symbol used to represent wave functions in quantum mechanics.

Question 8

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the lowest-energy photon.
A)n = 1 → n = 6
B)n = 6 → n = 1
C)n = 6 → n = 3
D)n = 3 → n = 6
E)n = 1 → n = 4

Accepted Answer

The energy of a photon emitted during a transition between two energy levels in the Bohr hydrogen atom is proportional to the difference in the energy levels. The transition from n = 6 to n = 3 involves a smaller energy difference compared to the larger jumps between other levels listed, resulting in the emission of the lowest-energy photon.

Question 9

An electron cannot have the quantum numbers n = __________, l = __________, m_l = __________. A)2, 0, 0 B)2, 1, -1 C)3, 1, -1 D)1, 1, 1 E)3, 2, 1

Accepted Answer

For an electron, n cannot be equal to 1 when l is also equal to 1. So, option D is the only possible answer since n=1 and l=1 for option D, which is not allowed.

Question 10

According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.
A)mass
B)color
C)momentum
D)shape
E)charge

Accepted Answer

The Heisenberg Uncertainty Principle states that the more precisely the position of a particle is known, the less precisely its momentum can be known. Therefore, the correct answer is momentum (choice C). The other options (mass, color, shape, and charge) are not affected by the Uncertainty Principle.

Question 11

Of the following, __________ radiation has the shortest wavelength.
A)X-ray
B)radio
C)microwave
D)ultraviolet
E)infrared

Accepted Answer

X-rays have the shortest wavelength among the given options, ranging from 0.01 to 10 nanometers. They have high energy and can penetrate solid objects, making them useful in medical imaging and other applications.

Question 12

In the Bohr model of the atom, __________.
A)electrons travel in circular paths called orbitals
B)electrons can have any energy
C)electron energies are quantized
D)electron paths are controlled by probability
E)both A and C

Accepted Answer

The answer of In the Bohr model of the atom,...

Question 13

All of the orbitals in a given subshell have the same value of the __________ quantum number.
A)principal
B)angular momentum
C)magnetic
D)A and B
E)B and C

Accepted Answer

All of the orbitals in a given subshell have the same value of the principal quantum number (n) and the angular momentum quantum number (l).

Question 14

An electron cannot have the quantum numbers n = __________, l = __________, m_l = __________. A)6, 1, 0 B)3, 2, 3 C)3, 2, -2 D)1, 0, 0 E)3, 2, 1

Accepted Answer

The answer of An electron cannot have the quantum numbers...

Question 15

Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell?
A)2
B)3
C)0
D)1
E)-1

Accepted Answer

The magnetic quantum number, ml, specifies the orientation of the orbital in space and can take on integer values ranging from -l to +l. In a 5d subshell, l=2, which means that ml can take on the values -2, -1, 0, +1, or +2. Therefore, 3 is not a valid value for ml in a 5d subshell.

Question 16

The photoelectric effect is __________.
A)the total reflection of light by metals giving them their typical luster
B)the production of current by silicon solar cells when exposed to sunlight
C)the ejection of electrons by a metal when struck with light of sufficient energy
D)the darkening of photographic film when exposed to an electric field
E)a relativistic effect

Accepted Answer

The photoelectric effect is the phenomenon where a metal emits electrons when struck with light of sufficient energy. This effect cannot be explained by classical electromagnetic theory and was one of the key pieces of evidence for the existence of photons and the wave-particle duality of light.

Question 17

The uncertainty principle states that __________.
A)matter and energy are really the same thing
B)it is impossible to know anything with certainty
C)it is impossible to know the exact position and momentum of an electron
D)there can only be one uncertain digit in a reported number
E)it is impossible to know how many electrons there are in an atom

Accepted Answer

The uncertainty principle, developed by Werner Heisenberg, states that it is impossible to know the exact position and momentum of a subatomic particle, such as an electron, at the same time. This fundamental limitation is due to the fact that when the position of a particle is measured with high precision, its momentum becomes uncertain, and vice versa.

Question 18

Which one of the following is correct?
A)ν + λ = c
B)ν ÷ λ = c
C)ν = cλ
D)λ = c ν
E)νλ = c

Accepted Answer

The answer of Which one of the following is correct?
A)ν...

Question 19

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon.
A)n = 1 → n = 6
B)n = 6 → n = 1
C)n = 6 → n = 3
D)n = 3 → n = 6
E)n = 1 → n = 4

Accepted Answer

The highest-energy photon is emitted during the transition from the highest energy level (n=6) to the lowest energy level (n=1). Therefore, option B (n=6 → n=1) is the correct choice.

Question 20

Which one of the following is considered to be ionizing radiation?
A)visible light
B)radio waves
C)X-rays
D)microwaves
E)infrared radiation

Accepted Answer

Ionizing radiation is any type of radiation with enough energy to ionize atoms or molecules, meaning it can remove an electron from an atom or molecule. X-rays are a form of electromagnetic radiation that have enough energy to ionize atoms, making them a type of ionizing radiation. Visible light, radio waves, microwaves, and infrared radiation do not have enough energy to cause ionization and therefore are considered non-ionizing radiation.

Quiz 6: Electronic Structure of Atoms

The wavelength of light emitted from a traffic light having a frequency of 5.75 × 10¹⁴ Hz is __________.

The de Broglie wavelength of a 6.0 gram bullet traveling at the speed of sound is __________. The speed of sound is 331 m/sec.

Which one of the following is an incorrect subshell notation?

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

The de Broglie wavelength of a __________ will have the shortest wavelength when traveling at 30 cm/s.

All of the orbitals in a given electron shell have the same value of the __________ quantum number.

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the lowest-energy photon.

An electron cannot have the quantum numbers n = , l = , m_l = __________.

According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.

Of the following, __________ radiation has the shortest wavelength.

In the Bohr model of the atom, __________.

All of the orbitals in a given subshell have the same value of the __________ quantum number.

An electron cannot have the quantum numbers n = , l = , m_l = __________.

Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell?

The photoelectric effect is __________.

The uncertainty principle states that __________.

Which one of the following is correct?

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon.

Which one of the following is considered to be ionizing radiation?

Quiz 6: Electronic Structure of Atoms

The wavelength of light emitted from a traffic light having a frequency of 5.75 × 1014 Hz is __________.

The de Broglie wavelength of a 6.0 gram bullet traveling at the speed of sound is __________. The speed of sound is 331 m/sec.

Which one of the following is an incorrect subshell notation?

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?

The de Broglie wavelength of a __________ will have the shortest wavelength when traveling at 30 cm/s.

All of the orbitals in a given electron shell have the same value of the __________ quantum number.

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the lowest-energy photon.

An electron cannot have the quantum numbers n = __________, l = __________, ml = __________.

According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron.

Of the following, __________ radiation has the shortest wavelength.

In the Bohr model of the atom, __________.

All of the orbitals in a given subshell have the same value of the __________ quantum number.

An electron cannot have the quantum numbers n = __________, l = __________, ml = __________.

Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell?

The photoelectric effect is __________.

The uncertainty principle states that __________.

Which one of the following is correct?

Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon.

Which one of the following is considered to be ionizing radiation?

The wavelength of light emitted from a traffic light having a frequency of 5.75 × 10¹⁴ Hz is __________.

An electron cannot have the quantum numbers n = , l = , m_l = __________.

An electron cannot have the quantum numbers n = , l = , m_l = __________.