Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 25Q
When comparing the size of different ions, the general radii trend discussed in Chapter 2 is usually not very useful. What do you concentrate on when comparing sizes of ions to each other or when comparing the size of an ion to its neutral atom?
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Students have asked these similar questions
While investigating the properties of other diatomic molecules, the student finds the diagram below, which shows the potential energy of two iodine atoms versus the distance between their nuclei. The student also finds that the I-I bond energy is slightly less than the F-F bond energy. The student incorrectly sketches the potential energy curve for two fluorine atoms, shown by the dotted line in the diagram.
Chemical bonds are usually classified as either covalent or ionic.
A covalent bond occurs when atoms share electrons. The resulting cluster of atoms is called a molecule, and the compound is considered to be molecular.
An ionic bond results from a transfer of one or more electrons from one atom to another. This creates oppositely charged ions that group together into large macroscopic lattices as opposed to small clusters. For this reason, ionic compounds are not considered to be molecular.
As a general rule, covalent bonds occur between two nonmetal atoms whereas ionic bonds occur between a metal and a nonmetal atom.
Part C
Bond length is the distance between the centers of two bonded atoms. On
the potential energy curve, the bond length is the internuclear distance
between the two atoms when the potential energy of the system reaches
its lowest value.
Consider that the atomic radius (sometimes called the covalent or
bonding atomic radius) of an element is defined as one-half the distance
between the bonded atoms in a homonuclear diatomic molecule. Actual
bond lengths in molecules are determined experimentally by such
methods as X-ray diffraction and microwave spectroscopy. However,
these atomic radii values can be used to give an estimate of the upper
limit of bond length in other (heteronuclear) molecules.
Given that the atomic radii of H and F are 37.0 pm and 72.0 pm,
respectively, predict the upper limit of the bond length of the HF
molecule.
Express your answer to three significant figures and include the
appropriate units.
► View Available Hint(s)
Bond length upper
limit=
Submit
μÅ
Value…
Chapter 8 Solutions
Chemistry
Ch. 8 - Distinguish between the terms electronegativity...Ch. 8 - When an element forms an anion, what happens to...Ch. 8 - Define the term lattice energy. Why,...Ch. 8 - Explain how bond energies can be used to estimate...Ch. 8 - Prob. 5RQCh. 8 - Explain the terms resonance and delocalized...Ch. 8 - Define formal charge and explain how to calculate...Ch. 8 - Give two requirements that should be satisfied for...Ch. 8 - Consider the following compounds: CO2, SO2, KrF2,...Ch. 8 - Explain the electronegativity trends across a row...
Ch. 8 - The ionic compound AB is formed. The charges on...Ch. 8 - Prob. 3ALQCh. 8 - The bond energy for a CH bond is about 413 kJ/mol...Ch. 8 - Prob. 5ALQCh. 8 - Which has the greater bond lengths: NO2 or NO3?...Ch. 8 - The following ions are best described with...Ch. 8 - The second electron affinity values for both...Ch. 8 - What is meant by a chemical bond? Why do atoms...Ch. 8 - Why are some bonds ionic and some covalent?Ch. 8 - How does a bond between Na and Cl differ from a...Ch. 8 - Arrange the following molecules from most to least...Ch. 8 - Does a Lewis structure tell which electron come...Ch. 8 - True or false? In general, a large atom has a...Ch. 8 - What is the central idea of the VSEPR model?Ch. 8 - In Section 8.13 of the text, the term effective...Ch. 8 - Describe the type of bonding that exists in die...Ch. 8 - Some plant fertilizer compounds are (NH4)2SO4,...Ch. 8 - Some of the important properties of ionic...Ch. 8 - What is the electronegativity trend? Where does...Ch. 8 - Give one example of a compound having a linear...Ch. 8 - When comparing the size of different ions, the...Ch. 8 - In general the higher the charge on the ions in an...Ch. 8 - Combustion reactions of fossil fuels provide most...Ch. 8 - Which of the following statements is/are true?...Ch. 8 - Prob. 29QCh. 8 - The molecules BF3, CF4, CO2, PF5, and SF6 are all...Ch. 8 - Without using Fig. 3-4, predict the order of...Ch. 8 - Without using Fig. 3-4, predict the order of...Ch. 8 - Without using Fig. 3-4, predict which bond in each...Ch. 8 - Without using Fig. 3-4, predict which bond in each...Ch. 8 - Prob. 35ECh. 8 - Prob. 36ECh. 8 - Which of the following incorrectly shows the bond...Ch. 8 - Indicate the bond polarity (show the partial...Ch. 8 - Predict the type of bond (ionic, covalent, or...Ch. 8 - List all the possible bonds that can occur between...Ch. 8 - Hydrogen has an electronegativity value between...Ch. 8 - Rank the following bonds in order of increasing...Ch. 8 - State whether or not each of the following has a...Ch. 8 - The following electrostatic potential diagrams...Ch. 8 - Prob. 45ECh. 8 - Prob. 46ECh. 8 - Predict the empirical formulas of the ionic...Ch. 8 - Predict the empirical formulas of the ionic...Ch. 8 - Write electron configurations for a. the cations...Ch. 8 - Write electron configurations for a. the cations...Ch. 8 - Which of the following ions have noble gas...Ch. 8 - What noble gas has the same electron configuration...Ch. 8 - Give the formula of a negative ion that would have...Ch. 8 - Prob. 54ECh. 8 - Give three ions that are isoelectronic with neon....Ch. 8 - Consider the ions Sc3+, Cl, K+, Ca2+, and S2....Ch. 8 - Prob. 57ECh. 8 - For each of the following groups, place the atoms...Ch. 8 - Which compound in each of the following pairs of...Ch. 8 - Which compound in each of the following pairs of...Ch. 8 - Use the following data for potassium chloride to...Ch. 8 - Use the following data for magnesium fluoride to...Ch. 8 - Consider the following energy changes: E(kJ/mol)...Ch. 8 - Compare the electron affinity of fluorine to the...Ch. 8 - Prob. 65ECh. 8 - Use the following data (in kJ/mol) to estimate E...Ch. 8 - Rationalize the following lattice energy values:...Ch. 8 - The lattice energies of FeCl3, FeCl2, and Fe2O3...Ch. 8 - Use bond energy values (Table 3-3) to estimate E...Ch. 8 - Use bond energy values (Table 3-3) to estimate E...Ch. 8 - Prob. 71ECh. 8 - Acetic acid is responsible for the sour taste of...Ch. 8 - Use bond energies to predict E for the following...Ch. 8 - The major industrial source of hydrogen gas is by...Ch. 8 - Use bond energies to estimate E for the combustion...Ch. 8 - Prob. 76ECh. 8 - Prob. 77ECh. 8 - Consider the following reaction: A2+B22AB E =...Ch. 8 - Compare your answers from parts a and b of...Ch. 8 - Compare your answers from Exercise 72 to the H...Ch. 8 - The standard enthalpies of formation for S(g),...Ch. 8 - Use the following standard enthalpies of formation...Ch. 8 - The standard enthalpy of formation for N2H2(g) is...Ch. 8 - The standard enthalpy of formation for NO(g) is...Ch. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - One type of exception to the octet rule are...Ch. 8 - Lewis structures can be used to understand why...Ch. 8 - The most common exceptions to the octet rule are...Ch. 8 - Prob. 92ECh. 8 - Write Lewis structures for the following. Show all...Ch. 8 - Prob. 94ECh. 8 - Benzene (C6H6) consists of a six-membered ring of...Ch. 8 - Borazine (B3N3H6) has often been called inorganic...Ch. 8 - An important observation supporting the concept of...Ch. 8 - Consider the following bond lengths: CO143pmC9O123...Ch. 8 - A toxic cloud covered Bhopal, India, in December...Ch. 8 - Prob. 103ECh. 8 - Prob. 104ECh. 8 - Write Lewis structures that obey the octet rule...Ch. 8 - Write Lewis structures for the species in Exercise...Ch. 8 - Oxidation of the cyanide ion produces the stable...Ch. 8 - When molten sulfur reacts with chlorine gas, a...Ch. 8 - Carbon and sulfur form compounds with each other...Ch. 8 - Prob. 112ECh. 8 - Predict the molecular structure and bond angles...Ch. 8 - Predict die molecular structure and bond angles...Ch. 8 - There are several molecular structures based on...Ch. 8 - Two variations of the octahedral geometry (see...Ch. 8 - Prob. 117ECh. 8 - Consider the molecular structures illustrated in...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Predict the molecular structure (including bond...Ch. 8 - Prob. 123ECh. 8 - Which of the molecules in Exercise 120 have net...Ch. 8 - Which of the molecules in Exercise 121 have net...Ch. 8 - Which of the molecules in Exercise 122 have net...Ch. 8 - Write Lewis structures and predict the molecular...Ch. 8 - Write Lewis structures and predict whether each of...Ch. 8 - Consider the following Lewis structure where E is...Ch. 8 - Consider the following Lewis structure where E is...Ch. 8 - Two different compounds exist having the formula...Ch. 8 - Two different compounds have the formula XeF2Cl2....Ch. 8 - Arrange the following in order of increasing...Ch. 8 - For each of the following, write an equation that...Ch. 8 - Use bond energies (table 3-3), values of electron...Ch. 8 - Write Lewis structures for CO32, HCO3, and H2CO3....Ch. 8 - Which member of the following pairs would you...Ch. 8 - What do each of the following sets of...Ch. 8 - Prob. 139AECh. 8 - Although both Br3 and I3 ions are known, the F3...Ch. 8 - Prob. 142AECh. 8 - Which of the following molecules have not dipole...Ch. 8 - Prob. 145AECh. 8 - Look up the energies for the bonds in CO and N2....Ch. 8 - Classify the bonding in each of the following...Ch. 8 - List the bonds PCl, PF, OF, and SiF from least...Ch. 8 - Arrange the atoms and/or ions in the following...Ch. 8 - Use the following data to estimate E for the...Ch. 8 - Use bond energy values to estimate E for the...Ch. 8 - Which of the following compounds or ions exhibit...Ch. 8 - The formulas of several chemical substances are...Ch. 8 - Predict the molecular structure, bond angles, and...Ch. 8 - Use Coulombs Jaw, V=Q1Q240r=2.311019Jnm(Q1Q2r) to...Ch. 8 - Prob. 156CPCh. 8 - Calculate the standard heat of formation of the...Ch. 8 - Given the following information: Energy of...Ch. 8 - Prob. 159CPCh. 8 - Think of forming an ionic compound as three steps...Ch. 8 - The compound NF3 is quite stable, but NCl3, is...Ch. 8 - Three processes that have been used for the...Ch. 8 - The compound hexaazaisowurtzitane is one of the...Ch. 8 - Many times extra stability is characteristic of a...Ch. 8 - The study of carbon-containing compounds and their...Ch. 8 - Draw a Lewis structure for the N,...Ch. 8 - Prob. 167CPCh. 8 - Consider the following computer-generated model of...Ch. 8 - Cholesterol (C27H46O) has the following structure:...Ch. 8 - A compound, XF5, is 42.81% fluorine by mass....Ch. 8 - Identify the following elements based on their...
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- Why do nonmetals tend to form anions rather than cations?arrow_forwardAn ionic compound has the following composition (by mass): Mg, 10.9%; Cl, 31.8%; O, 57.3%. What are the formula and name of the compound? Write the Lewis formulas for the ions.arrow_forwardFor which of the following substances is the least energy required to convert one mole of the solid into separate ions? (a) MgO (b) SrO (c) KF (d) CsF (e) MgF2arrow_forward
- Hydrogen gas and oxygen gas react violently to form water. When this occurs, a very loud noise is heard. Draw the Lewis structures for hydrogen gas, oxygen gas, and water. State whether each molecule is polar or nonpolar and why. Explain how the polarity of these molecules is related to hydrogen and oxygen existing in the gas phase at room temperature and water existing in the liquid phase at room temperature. Which is lower in energy for this reaction a mixture of hydrogen and oxygen gases or water? How do you know this is true?arrow_forwardWhich of the following atoms would be expected to form negative ions in binary ionic compounds and which would be expected to form positive ions: Br, Ca, Na, N, F, Al, Sn, S, Cd?arrow_forwardAn ionic compound has the following composition (by mass): Ca, 30.3%; N, 21.2%; O, 48.5%. What are the formula and name of the compound? Write the Lewis formulas for the ions.arrow_forward
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