Question 1

Which one of the following statements concerning the plum-pudding model of the atom is false?

Accepted Answer

A) There is no nucleus at the center of the plum-pudding model atom. 
B) The plum-pudding model was proven correct in experiments by Ernest Rutherford. 
C) The plum-pudding model was proposed by Joseph J. Thomson. 
D) Positive charge is spread uniformly throughout the plum-pudding model atom. 
E) Negative electrons are dispersed uniformly within the positively charged "pudding" within the plum-pudding model atom. 
A) There is no nucleus at the center of the plum-pudding model atom. 
B) The plum-pudding model was proven correct in experiments by Ernest Rutherford. 
C) The plum-pudding model was proposed by Joseph J. Thomson. 
D) Positive charge is spread uniformly throughout the plum-pudding model atom. 
E) Negative electrons are dispersed uniformly within the positively charged "pudding" within the plum-pudding model atom.

Question 2

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 3

A neutral atom has the following electronic configuration: 1sS1U1P12S1S1P0 2sS1U1P12S1S1P0 2pS1U1P16S1S1P0 3sS1U1P12S1S1P0 3pS1U1P15S1S1P0
-How many protons are in the atomic nucleus?

Accepted Answer

A) 4 
B) 7 
C) 12 
D) 17 
E) 34 
A) 4 
B) 7 
C) 12 
D) 17 
E) 34

Question 4

How many electrons could be accommodated in an f subshell?

Accepted Answer

A) 6 
B) 8 
C) 10 
D) 14 
E) 18 
A) 6 
B) 8 
C) 10 
D) 14 
E) 18

Question 5

The nucleus of a certain atom has a radius of 4.0 × 10-15 m. An electron orbits the nucleus at a radius of 1.5 × 10-10 m. Imagine the electron orbit is on the surface of a sphere and that the shape of the nucleus is spherical. Approximately how many nuclei would fit into the sphere on which the electron orbits?

Accepted Answer

A) 5.3 × 1013 
B) 4.9 × 1011 
C) 1.4 × 109 
D) 7.5 × 107 
E) 3.8 × 104 
A) 5.3 × 1013 
B) 4.9 × 1011 
C) 1.4 × 109 
D) 7.5 × 107 
E) 3.8 × 104

Question 6

Complete the following statement: In the laser-based medical procedure known as photorefractive keratectomy (PRK), nearsightedness and farsightedness can be treated using the laser to

Accepted Answer

A) remove small amounts of tissue from the lens and change its curvature. 
B) remove small amounts of tissue from the cornea and change its curvature. 
C) change the index of refraction of the aqueous humor. 
D) alter the fluid pressure within the eye. 
E) stimulate unused rods and cones on the retina. 
A) remove small amounts of tissue from the lens and change its curvature. 
B) remove small amounts of tissue from the cornea and change its curvature. 
C) change the index of refraction of the aqueous humor. 
D) alter the fluid pressure within the eye. 
E) stimulate unused rods and cones on the retina.

Question 7

Determine the energy of the photon emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 level to the n = 4 level.

Accepted Answer

A) 0.17 eV 
B) 0.21 eV 
C) 0.36 eV 
D) 0.57 eV 
E) 1.3 eV 
A) 0.17 eV 
B) 0.21 eV 
C) 0.36 eV 
D) 0.57 eV 
E) 1.3 eV

Question 8

Which one of the following subshells is not compatible with a principle quantum number of n = 4?

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

Consider the following list of electron configurations:  
-Which one of the above lists represents the electronic configuration for the ground state of the atom with Z = 11?

Accepted Answer

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

Question 11

Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

Accepted Answer

A) photoelectric effect and the effect observed in Young's experiment 
B) diffraction and the formation of atomic spectra 
C) polarization and the photoelectric effect 
D) existence of line spectra and the photoelectric effect 
E) polarization and the formation of line spectra 
A) photoelectric effect and the effect observed in Young's experiment 
B) diffraction and the formation of atomic spectra 
C) polarization and the photoelectric effect 
D) existence of line spectra and the photoelectric effect 
E) polarization and the formation of line spectra

Question 12

An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?

Accepted Answer

A) 13.6 eV 
B) 10.2 eV 
C) 3.40 eV 
D) 1.51 eV 
E) 0.54 eV 
A) 13.6 eV 
B) 10.2 eV 
C) 3.40 eV 
D) 1.51 eV 
E) 0.54 eV

Question 13

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 14

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 15

Complete the following statement: For the ground state of the hydrogen atom, the Bohr model correctly predicts

Accepted Answer

A) only the energy. 
B) only the angular momentum. 
C) only the angular momentum and the spin. 
D) the angular momentum and the energy. 
E) the energy, the angular momentum, and the spin. 
A) only the energy. 
B) only the angular momentum. 
C) only the angular momentum and the spin. 
D) the angular momentum and the energy. 
E) the energy, the angular momentum, and the spin.

Question 16

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, LA/LB, of an electron in these two states?

Accepted Answer

A) 1.22 
B) 1.73 
C) 2.00 
D) 2.45 
E) 3.46 
A) 1.22 
B) 1.73 
C) 2.00 
D) 2.45 
E) 3.46

Question 17

According to the quantum mechanical picture of the atom, which one of the following is a true statement concerning the ground state electron in a hydrogen atom?

Accepted Answer

A) The ground state electron has zero kinetic energy. 
B) The ground state electron has zero binding energy. 
C) The ground state electron has zero ionization energy. 
D) The ground state electron has zero spin angular momentum. 
E) The ground state electron has zero orbital angular momentum. 
A) The ground state electron has zero kinetic energy. 
B) The ground state electron has zero binding energy. 
C) The ground state electron has zero ionization energy. 
D) The ground state electron has zero spin angular momentum. 
E) The ground state electron has zero orbital angular momentum.

Question 18

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

Question 19

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

Question 20

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

Exam 30: The Nature of the Atom

Which one of the following statements concerning the plum-pudding model of the atom is false?

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

A neutral atom has the following electronic configuration: 1s2 2s2 2p6 3s2 3p5 -How many protons are in the atomic nucleus?

How many electrons could be accommodated in an f subshell?

Complete the following statement: In the laser-based medical procedure known as photorefractive keratectomy (PRK), nearsightedness and farsightedness can be treated using the laser to

Determine the energy of the photon emitted when the electron in a hydrogen atom undergoes a transition from the n = 7 level to the n = 4 level.

Which one of the following subshells is not compatible with a principle quantum number of n = 4?

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

Consider the following list of electron configurations: -Which one of the above lists represents the electronic configuration for the ground state of the atom with Z = 11?

Which one of the following pairs of characteristics of light is best explained by assuming that light can be described in terms of photons?

An electron is in the ground state of a hydrogen atom. A photon is absorbed by the atom and the electron is excited to the n = 2 state. What is the energy in eV of the photon?

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

Which one of the following statements concerning the cutoff wavelength typically exhibited in X-ray spectra is true?

Complete the following statement: For the ground state of the hydrogen atom, the Bohr model correctly predicts

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, LA/LB, of an electron in these two states?

According to the quantum mechanical picture of the atom, which one of the following is a true statement concerning the ground state electron in a hydrogen atom?

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

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.

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

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 Refl Ection 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 protons are in the atomic nucleus?

Two possible states for the hydrogen atom are labeled A and B. The maximum magnetic quantum number for state A is +3. For state B, the maximum value is +1. What is the ratio of the magnitudes of the orbital angular momenta, L_A/L_B, of an electron in these two states?

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