Question 1

A neutral atom has the following electronic configuration: 1sS1U1P12S1S1P0 2sS1U1P12S1S1P0 2pS1U1P16S1S1P0 3sS1U1P12S1S1P0 3pS1U1P15S1S1P0
-How many electrons are in the M shell?

Accepted Answer

A) 2 
B) 5 
C) 6 
D) 7 
E) 8 
A) 2 
B) 5 
C) 6 
D) 7 
E) 8 D

Question 2

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 B

Question 3

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 4

Consider the following list of electron configurations:
  
-Which one of the above configurations represents a transition element?

Accepted Answer

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

Question 5

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 6

An argon-ion laser emits a blue-green beam of light with a wavelength of 514.5 nm in a vacuum.What is the difference in energy in joules between the two energy states for the atomic transition that produces this light?

Accepted Answer

A) 6.08 × 10-19 J 
B) 1.05 × 10-20 J 
C) 5.18 × 10-19 J 
D) 3.86 × 10-19 J 
E) 4.10 × 10-20 J 
A) 6.08 × 10-19 J 
B) 1.05 × 10-20 J 
C) 5.18 × 10-19 J 
D) 3.86 × 10-19 J 
E) 4.10 × 10-20 J

Question 7

Which one of the following will result in an electron transition from the n = 4 level to the n = 7 level in a hydrogen atom?

Accepted Answer

A) emission of a 0.28 eV photon 
B) emission of a 0.57 eV photon 
C) absorption of a 0.85 eV photon 
D) absorption of a 0.28 eV photon 
E) absorption of a 0.57 eV photon 
A) emission of a 0.28 eV photon 
B) emission of a 0.57 eV photon 
C) absorption of a 0.85 eV photon 
D) absorption of a 0.28 eV photon 
E) absorption of a 0.57 eV photon

Question 8

The principle quantum number for the electron in a hydrogen atom is n = 5.According to the quantum mechanical picture of the atom, what is the maximum possible value for the magnitude of the z-component of the angular momentum of the electron?

Accepted Answer

A) 3.17 × 10-34 kg . m2/s 
B) 4.22 × 10-34 kg . m2/s 
C) 1.99 × 10-34 kg .m2/s 
D) 1.06 × 10-34 kg . m2/s 
E) 2.11 × 10-33 kg . m2/s 
A) 3.17 × 10-34 kg . m2/s 
B) 4.22 × 10-34 kg . m2/s 
C) 1.99 × 10-34 kg .m2/s 
D) 1.06 × 10-34 kg . m2/s 
E) 2.11 × 10-33 kg . m2/s

Question 9

The kinetic energy of the ground state electron in hydrogen is +13.6 eV.What is its potential energy?

Accepted Answer

A) -13.6 eV 
B) +27.2 eV 
C) -27.2 eV 
D) +56.2 eV 
E) zero eV 
A) -13.6 eV 
B) +27.2 eV 
C) -27.2 eV 
D) +56.2 eV 
E) zero eV

Question 10

Which transition will occur when a hydrogen atom is irradiated with radiation of frequency 1.60 × 1014 Hz?

Accepted Answer

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

Question 11

Which one of the following factors best explains why the six electrons of a carbon atom are not all in the 1s state?

Accepted Answer

A) electron spin 
B) Coulomb's law 
C) Pauli exclusion principle 
D) Heisenberg uncertainty principle 
E) Rutherford model of atomic structure 
A) electron spin 
B) Coulomb's law 
C) Pauli exclusion principle 
D) Heisenberg uncertainty principle 
E) Rutherford model of atomic structure

Question 12

Which one of the following statements is the assumption that Niels Bohr made about the angular momentum of the electron in the hydrogen atom?

Accepted Answer

A) The angular momentum of the electron is zero. 
B) The angular momentum can have only certain discrete values. 
C) Angular momentum is not quantized. 
D) The angular momentum can have any value greater than zero because it's proportional to the radius of the orbit. 
E) The angular momentum is independent of the mass of the electron. 
A) The angular momentum of the electron is zero. 
B) The angular momentum can have only certain discrete values. 
C) Angular momentum is not quantized. 
D) The angular momentum can have any value greater than zero because it's proportional to the radius of the orbit. 
E) The angular momentum is independent of the mass of the electron.

Question 13

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.

Question 14

To which model of atomic structure does the Pauli exclusion principle apply?

Accepted Answer

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

Question 15

The electron in a hydrogen atom is in the n = 3 state.What is(are) the possible value(s) for an emitted photon?

Accepted Answer

A) 1.89 eV or 12.09 eV 
B) 1.89 eV or 13.6 eV 
C) 0.66 eV or 13.6 eV 
D) 0.66 eV or 12.09 eV 
E) 1.51 eV only 
A) 1.89 eV or 12.09 eV 
B) 1.89 eV or 13.6 eV 
C) 0.66 eV or 13.6 eV 
D) 0.66 eV or 12.09 eV 
E) 1.51 eV only

Question 16

Electrons have been removed from a lithium atom (Z = 3) until only one remains.Determine the energy of the photon that can be emitted if the remaining electron is in the n = 2 level.

Accepted Answer

A) 33.7 eV 
B) 54.4 eV 
C) 91.9 eV 
D) 163 eV 
E) 181 eV 
A) 33.7 eV 
B) 54.4 eV 
C) 91.9 eV 
D) 163 eV 
E) 181 eV

Question 17

Consider the following list of electron configurations:
  
-Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Accepted Answer

A) The cutoff wavelength depends on the target material. 
B) The cutoff wavelength depends on the potential difference across the X-ray tube. 
C) The cutoff wavelength is independent of the energy of the incident electrons. 
D) The cutoff wavelength occurs because of the mutual shielding effects of K-shell electrons. 
E) The cutoff wavelength occurs because an incident electron cannot give up all of its energy. 
A) The cutoff wavelength depends on the target material. 
B) The cutoff wavelength depends on the potential difference across the X-ray tube. 
C) The cutoff wavelength is independent of the energy of the incident electrons. 
D) The cutoff wavelength occurs because of the mutual shielding effects of K-shell electrons. 
E) The cutoff wavelength occurs because an incident electron cannot give up all of its energy.

Question 18

Consider the following list of electron configurations:
  
-Which one of the above configurations represents an excited state of a neutral atom?

Accepted Answer

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

Question 19

Consider the following list of electron configurations:
  
-Which electron energy will produce the largest cutoff wavelength for X-ray production from a nickel (Z = 28) surface?

Accepted Answer

A) 25 keV 
B) 30 keV 
C) 35 keV 
D) 40 keV 
E) 45 keV 
A) 25 keV 
B) 30 keV 
C) 35 keV 
D) 40 keV 
E) 45 keV

Question 20

Electrons in an X-ray tube are accelerated through a potential difference of 40 kV.The electrons then strike a zirconium (Z = 40) target.Determine the cutoff frequency for X-ray production.

Accepted Answer

A) 4.7 × 1019 Hz 
B) 9.7 × 1018 Hz 
C) 3.2 × 1018 Hz 
D) 6.7 × 1017 Hz 
E) 1.1 × 1016 Hz 
A) 4.7 × 1019 Hz 
B) 9.7 × 1018 Hz 
C) 3.2 × 1018 Hz 
D) 6.7 × 1017 Hz 
E) 1.1 × 1016 Hz

Exam 30: The Nature of the Atom

A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5 -How many electrons are in the M shell?

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?

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

Consider the following list of electron configurations: -Which one of the above configurations represents a transition element?

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

An argon-ion laser emits a blue-green beam of light with a wavelength of 514.5 nm in a vacuum.What is the difference in energy in joules between the two energy states for the atomic transition that produces this light?

Which one of the following will result in an electron transition from the n = 4 level to the n = 7 level in a hydrogen atom?

The principle quantum number for the electron in a hydrogen atom is n = 5.According to the quantum mechanical picture of the atom, what is the maximum possible value for the magnitude of the z-component of the angular momentum of the electron?

The kinetic energy of the ground state electron in hydrogen is +13.6 eV.What is its potential energy?

Which transition will occur when a hydrogen atom is irradiated with radiation of frequency 1.60 × 1014 Hz?

Which one of the following factors best explains why the six electrons of a carbon atom are not all in the 1s state?

Which one of the following statements is the assumption that Niels Bohr made about the angular momentum of the electron in the hydrogen atom?

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

To which model of atomic structure does the Pauli exclusion principle apply?

The electron in a hydrogen atom is in the n = 3 state.What is(are) the possible value(s) for an emitted photon?

Electrons have been removed from a lithium atom (Z = 3) until only one remains.Determine the energy of the photon that can be emitted if the remaining electron is in the n = 2 level.

Consider the following list of electron configurations: -Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Consider the following list of electron configurations: -Which one of the above configurations represents an excited state of a neutral atom?

Consider the following list of electron configurations: -Which electron energy will produce the largest cutoff wavelength for X-ray production from a nickel (Z = 28) surface?

Electrons in an X-ray tube are accelerated through a potential difference of 40 kV.The electrons then strike a zirconium (Z = 40) target.Determine the cutoff frequency for X-ray production.

Introduction and Mathematical Concepts

Kinematics in One Dimension

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Fluids

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Electric Circuits

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Reflection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

Particles and Waves

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

Filters

A neutral atom has the following electronic configuration: 1s² 2s² 2p⁶ 3s² 3p⁵ -How many electrons are in the M shell?

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?

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

Which transition will occur when a hydrogen atom is irradiated with radiation of frequency 1.60 × 10¹⁴ Hz?