Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
74. The ground-state electron configuration for an atom of indium is
75. Which of the following is the ground-state electron configuration of Ir?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
76. Which of the following is the ground-state electron configuration of Pb?
77. A ground-state atom of manganese has ___ unpaired electrons and is _____.
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
78. A ground-state atom of vanadium has ___ unpaired electrons and is _____.
79. A ground-state atom of iron has ___ unpaired electrons and is _____.
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
80. Transition metal elements have atoms or ions with partially filled
81. Lanthanide (or rare earth) elements have atoms or ions with partially filled
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
82. Which choice lists two elements with ground-state electron configurations that are well
known exceptions to the Aufbau principle?
83. A ground-state chromium atom has how many unpaired electrons?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
84. Which of the following is the electron configuration of an excited state of an oxygen
atom?
85. Which of the following is the electron configuration of an excited state of an iron atom?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
86. Which of the following is the electron configuration of an excited state of a copper atom?
87. The ground-state electron configuration of Cr, Mo, and Ag are exceptions to the Aufbau
principle. Which of the following is the electron configuration for Mo?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
88. Which of the following atoms is diamagnetic in its ground-state?
89. Which of the following atoms is paramagnetic both in its ground state and in all of its
excited states?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
90. Which of the following is diamagnetic both in its ground state and in all of its excited
states?
91. 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 nm and 97.2 nm,
respectively. What is the principal quantum number or shell of the initial excited energy level
from which the electron falls?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
92. 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 1870 nm and 102.5 nm,
respectively. What is the principal quantum number or shell of the initial excited energy level
from which the electron falls?
93. When the electron in a hydrogen atom falls from the n = 3 excited energy level to the
ground state energy level, a photon with wavelength lis emitted. An electron having this same
wavelength would have a velocity of
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
94. 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?
95. Which of the following, if any, is the proper rank the following types of electromagnetic
radiation from lowest energy to highest energy?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
96. An FM radio station broadcasts at a frequency of 101.7 MHz. Calculate the wavelength of
the broadcast signal in meters. (c = 2.9979 108 m/s)
97. An AM radio station broadcasts at a frequency of 1270 kHz. Calculate the wavelength of
the broadcast signal in meters. (c = 2.9979 108 m/s)
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
98. Which, if any, represents the ground state electron configuration for the selenium atom?
99. Of the following which, if any, provides the correct ground state electron configuration for
the phosphorus atom?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
100. Which of the following, if any, is the correct ground state electron configuration for an
iodine atom?
101. Which of the following, if any, is the correct ground state electron configuration for a
lead atom?
Chapter 07 – Quantum Theory and the Electronic Structure of Atoms
102. Which of the following, if any, is the correct ground state electron configuration for Ni?
103. Which of the following, if any, is the correct ground state electron configuration for Cr?