Question 1

The ground state electronic configuration of a neon atom is 1s2 2s2 2p6. How many of these electrons have magnetic quantum number ml = 0?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 10 
A) 2 
B) 4 
C) 6 
D) 8 
E) 10 C

Question 2

Determine the maximum wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He+ (Z = 2). Assume the electron is in its ground state.

Accepted Answer

A) 6.2 nm 
B) 12.4 nm 
C) 22.8 nm 
D) 45.6 nm 
E) 54.4 nm 
A) 6.2 nm 
B) 12.4 nm 
C) 22.8 nm 
D) 45.6 nm 
E) 54.4 nm C

Question 3

Complete the following statement: An h subshell refers to orbital quantum number

Accepted Answer

A)    = 1. 
B)    = 2. 
C)    = 3. 
D)    = 4. 
E)    = 5. 
A)    = 1. 
B)    = 2. 
C)    = 3. 
D)    = 4. 
E)    = 5. E

Question 4

An electron in an atom has the following set of quantum numbers:
n = 2,   = 1,   = -1, mS1U1B1sS1U1B0 = +1/2.
-In which subshell can the electron be found?

Accepted Answer

A) s 
B) p 
C) d 
D) f 
E) g 
A) s 
B) p 
C) d 
D) f 
E) g

Question 5

Use the Bohr model to estimate the K$\alpha$X-ray wavelength for a gold atom (Z = 79).

Accepted Answer

A) 5.13 × 10-10 m 
B) 8.54 × 10-10 m 
C) 2.00 × 10-11 m 
D) 3.60 × 10-11 m 
E) 2.47 × 10-13 m 
A) 5.13 × 10-10 m 
B) 8.54 × 10-10 m 
C) 2.00 × 10-11 m 
D) 3.60 × 10-11 m 
E) 2.47 × 10-13 m

Question 6

The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters.   Note: The diagram is not drawn to scale.
-Determine the wavelength of the radiation involved in transition B.

Accepted Answer

A) 291 nm 
B) 364 nm 
C) 487 nm 
D) 652 nm 
E) 1910 nm 
A) 291 nm 
B) 364 nm 
C) 487 nm 
D) 652 nm 
E) 1910 nm

Question 7

Complete the following statement: An individual copper atom emits electromagnetic radiation with wavelengths that are

Accepted Answer

A) evenly spaced across the spectrum. 
B) unique to that particular copper atom. 
C) the same as other elements in the same column of the periodic table. 
D) unique to all copper atoms. 
E) the same as those of all elements. 
A) evenly spaced across the spectrum. 
B) unique to that particular copper atom. 
C) the same as other elements in the same column of the periodic table. 
D) unique to all copper atoms. 
E) the same as those of all elements.

Question 8

Complete the following sentence: In the condition known as population inversion,

Accepted Answer

A) the amount of one type of gas atoms is larger than that of another in a mixture. 
B) the number of energy levels that are populated is larger than that of unpopulated levels. 
C) there are more electrons occupying lower energy levels than occupying higher energy levels. 
D) there are more electrons occupying higher energy levels than occupying lower energy levels. 
E) there are more photons than electrons in a given system. 
A) the amount of one type of gas atoms is larger than that of another in a mixture. 
B) the number of energy levels that are populated is larger than that of unpopulated levels. 
C) there are more electrons occupying lower energy levels than occupying higher energy levels. 
D) there are more electrons occupying higher energy levels than occupying lower energy levels. 
E) there are more photons than electrons in a given system.

Question 9

How many electron states (including spin states) are possible in a hydrogen atom if its energy is -3.4 eV?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 10 
A) 2 
B) 4 
C) 6 
D) 8 
E) 10

Question 10

Determine the kinetic energy of an electron that has a de Broglie wavelength equal to twice the diameter of the hydrogen atom. Assume that the hydrogen atom is a sphere of radius 5.3 × 10-11 m.

Accepted Answer

A) 13.6 eV 
B) 27.2 eV 
C) 33.6 eV 
D) 48.9 eV 
E) 65.2 eV 
A) 13.6 eV 
B) 27.2 eV 
C) 33.6 eV 
D) 48.9 eV 
E) 65.2 eV

Question 11

What is the longest wavelength in the Paschen series of atomic spectra?

Accepted Answer

A) 8.204 × 10-7 m 
B) 1.875 × 10-6 m 
C) 2.216 × 10-6 m 
D) 5.522 × 10-6 m 
E) 6.756 × 10-5 m 
A) 8.204 × 10-7 m 
B) 1.875 × 10-6 m 
C) 2.216 × 10-6 m 
D) 5.522 × 10-6 m 
E) 6.756 × 10-5 m

Question 12

In the planetary model of the atom where electrons orbit a centralized nucleus, what is the approximate ratio of the radius of the nucleus to that of the electron orbits, rn/re?

Accepted Answer

A) 105 
B) 10-3 
C) 103 
D) 10-5 
E) 10-7 
A) 105 
B) 10-3 
C) 103 
D) 10-5 
E) 10-7

Question 13

In an X-ray tube, electrons with energy 38 keV are incident on a cobalt (Z = 27) target. Determine the cutoff wavelength for X-ray production.

Accepted Answer

A) 1.9 × 10-11 m 
B) 2.4 × 10-11 m 
C) 2.8 × 10-11 m 
D) 3.3 × 10-11 m 
E) 3.6 × 10-11 m 
A) 1.9 × 10-11 m 
B) 2.4 × 10-11 m 
C) 2.8 × 10-11 m 
D) 3.3 × 10-11 m 
E) 3.6 × 10-11 m

Question 14

The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters.   Note: The diagram is not drawn to scale.
-In which transition is a Balmer series photon absorbed?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 15

A pulsed laser has an average output power of 4.0 W. Each pulse consists of light at wavelength 5.0 × 10-7 m and has a 25 ms duration. How many photons are emitted in a single pulse?

Accepted Answer

A) 1.0 × 1017 
B) 2.5 × 1017 
C) 3.7 × 1017 
D) 5.0 × 1017 
E) 7.4 × 1017 
A) 1.0 × 1017 
B) 2.5 × 1017 
C) 3.7 × 1017 
D) 5.0 × 1017 
E) 7.4 × 1017

Question 16

What is the shortest possible wavelength in the Lyman series for atomic hydrogen?

Accepted Answer

A) 91.3 nm 
B) 104 nm 
C) 122 nm 
D) 364 nm 
E) 820 nm 
A) 91.3 nm 
B) 104 nm 
C) 122 nm 
D) 364 nm 
E) 820 nm

Question 17

Which model of atomic structure was developed to explain the results of the experiment shown?

Accepted Answer

A) Bohr model 
B) quantum mechanical atom 
C) billiard ball atom 
D) plum-pudding model 
E) nuclear atom 
A) Bohr model 
B) quantum mechanical atom 
C) billiard ball atom 
D) plum-pudding model 
E) nuclear atom

Question 18

Which one of the following electronic configurations corresponds to an atomic ground state?

Accepted Answer

A) 1s2 2s1 2p6 
B) 1s1 2s1 2p1 
C) 1s1 2s2 3p1 
D) 1s2 2s2 2p1 
E) 1s1 2s2 2p1 
A) 1s2 2s1 2p6 
B) 1s1 2s1 2p1 
C) 1s1 2s2 3p1 
D) 1s2 2s2 2p1 
E) 1s1 2s2 2p1

Question 19

Why was it necessary for Bohr to require that electrons remain in stationary orbits?

Accepted Answer

A) An electron must travel in a circular path. 
B) It was required by the Heisenberg uncertainty principle. 
C) No two electrons can be in the same region in the atom. 
D) It was required by the Pauli exclusion principle. 
E) Classical physics predicts that the electron should spiral into the nucleus. 
A) An electron must travel in a circular path. 
B) It was required by the Heisenberg uncertainty principle. 
C) No two electrons can be in the same region in the atom. 
D) It was required by the Pauli exclusion principle. 
E) Classical physics predicts that the electron should spiral into the nucleus.

Question 20

An atom will emit photons when one of its electrons goes from

Accepted Answer

A) the K shell to the L shell. 
B) the M shell to the N shell. 
C) the K shell to the M shell. 
D) the N shell to the L shell. 
E) the K shell to the N shell. 
A) the K shell to the L shell. 
B) the M shell to the N shell. 
C) the K shell to the M shell. 
D) the N shell to the L shell. 
E) the K shell to the N shell.

Exam 30: The Nature of the Atom

The ground state electronic configuration of a neon atom is 1s2 2s2 2p6. How many of these electrons have magnetic quantum number ml = 0?

Determine the maximum wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He+ (Z = 2). Assume the electron is in its ground state.

Complete the following statement: An h subshell refers to orbital quantum number

An electron in an atom has the following set of quantum numbers: n = 2, = 1, = -1, ms = +1/2. -In which subshell can the electron be found?

Use the Bohr model to estimate the K α\alphaα X-ray wavelength for a gold atom (Z = 79).

The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters. Note: The diagram is not drawn to scale. -Determine the wavelength of the radiation involved in transition B.

Complete the following statement: An individual copper atom emits electromagnetic radiation with wavelengths that are

Complete the following sentence: In the condition known as population inversion,

How many electron states (including spin states) are possible in a hydrogen atom if its energy is -3.4 eV?

Determine the kinetic energy of an electron that has a de Broglie wavelength equal to twice the diameter of the hydrogen atom. Assume that the hydrogen atom is a sphere of radius 5.3 × 10-11 m.

What is the longest wavelength in the Paschen series of atomic spectra?

In the planetary model of the atom where electrons orbit a centralized nucleus, what is the approximate ratio of the radius of the nucleus to that of the electron orbits, rn/re?

In an X-ray tube, electrons with energy 38 keV are incident on a cobalt (Z = 27) target. Determine the cutoff wavelength for X-ray production.

The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters. Note: The diagram is not drawn to scale. -In which transition is a Balmer series photon absorbed?

A pulsed laser has an average output power of 4.0 W. Each pulse consists of light at wavelength 5.0 × 10-7 m and has a 25 ms duration. How many photons are emitted in a single pulse?

What is the shortest possible wavelength in the Lyman series for atomic hydrogen?

Which model of atomic structure was developed to explain the results of the experiment shown?

Which one of the following electronic configurations corresponds to an atomic ground state?

Why was it necessary for Bohr to require that electrons remain in stationary orbits?

An atom will emit photons when one of its electrons goes from

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Filters

The ground state electronic configuration of a neon atom is 1s²2s²2p⁶. How many of these electrons have magnetic quantum number m_l = 0?

Determine the maximum wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He⁺ (Z = 2). Assume the electron is in its ground state.

An electron in an atom has the following set of quantum numbers: n = 2, = 1, = -1, m_s = +1/2. -In which subshell can the electron be found?

Use the Bohr model to estimate the K_$\alpha$X-ray wavelength for a gold atom (Z = 79).

Determine the kinetic energy of an electron that has a de Broglie wavelength equal to twice the diameter of the hydrogen atom. Assume that the hydrogen atom is a sphere of radius 5.3 × 10^-¹¹ m.

In the planetary model of the atom where electrons orbit a centralized nucleus, what is the approximate ratio of the radius of the nucleus to that of the electron orbits, r_n/r_e?

A pulsed laser has an average output power of 4.0 W. Each pulse consists of light at wavelength 5.0 × 10^-⁷ m and has a 25 ms duration. How many photons are emitted in a single pulse?