Chapter 08 – Periodic Relationships Among the Elements
112. Consider the following reaction 2A + 3F2 →2AF3. What is the formula for the reaction
product if we substitute iodine for fluorine?
113. Consider the following reaction 2A + 3F2 →2AF3. What is the formula for the reaction
product if we substitute sulfur for fluorine?
Chapter 08 – Periodic Relationships Among the Elements
114. Which, if any, is the ground-state electron configuration for S2–?
Chapter 08 – Periodic Relationships Among the Elements
117. Which, if any, is the ground-state electron configuration for Ni2+?
118. Which, if any, is the ground-state electron configuration for Br–?
119. Which, if any, is the ground-state electron configuration for K+?
Chapter 08 – Periodic Relationships Among the Elements
121. Which, if any, is the ground-state electron configuration for O2–?
122. Which, if any, is the ground-state electron configuration for I–?
Chapter 08 – Periodic Relationships Among the Elements
123. Which, if any, is the ground-state electron configuration for Mg2+?
124. Concerning the electron configuration of P, 1s22s22p63s23p4, which, if any, is the
configuration for the valence shell electrons only?
Chapter 08 – Periodic Relationships Among the Elements
125. Concerning the electron configuration of F, 1s22s22p5, which, if any, is the configuration
for the valence shell electrons only?
126. Concerning the electron configuration of S2-, 1s22s22p63s23p6, which, if any, is the
configuration for the valence shell electrons only?
Chapter 08 – Periodic Relationships Among the Elements
127. Select True or False: The Mg2+ ion is smaller than F–, even though they are
128. Select True or False: An I- ion has a larger radius than an I atom.
129. Select True or False: As the effective nuclear charge decreases, the electrons are pulled
closer to the nucleus and thus the radius of the atom decreases.
Chapter 08 – Periodic Relationships Among the Elements
130.
Given the following melting point data, what is a reasonable estimate of the melting point of potassium?
131. Consider the following reaction: 3Li + Z → Li3Z. What is a reasonable guess for the
identity of element Z?
Chapter 08 – Periodic Relationships Among the Elements
132. Consider the following reaction 2A + 3F2 → 2AF3. What is a reasonable guess for the
133. Write the products of the following reaction:
CO2(g) + H2O(l) →
Chapter 08 – Periodic Relationships Among the Elements
134. Write the products of the following reaction:
2K(s) + 2H2O(l) →
135. Write the products of the following reaction:
H2(g) + Cl2(g) →
Chapter 08 – Periodic Relationships Among the Elements
136. The following successive ionization energies correspond to an element in the third row
of the periodic table: I1 = 786.3 kJ/mol, I2 =1,580 kJ/mol, I3= 3,230 kJ/mol, I4 = 4,360 kJ/mol,
I5 = 16,000, and I6 = 20,000 kJ/mol. Based on this pattern of ionization energies, identify the
element.
137. Select True or False: The group 5A elements have relatively small electron affinities
compared to the neighboring nonmetals in the corresponding rows.
138. Select True or False: The radii of ions are always smaller than the radii of the
corresponding atoms of the same element.
Chapter 08 – Periodic Relationships Among the Elements
139. Select True or False: Electron affinity is always a positive quantity.
140. Select True or False: The electron configuration of the outermost electrons of atoms of
Chapter 08 – Periodic Relationships Among the Elements
142. Select True or False: For Mg atoms a very large jump in the magnitudes of the ionization
143. Select True or False: In general the effective nuclear charge felt by the outermost
electrons of an element increases when moving across a period.