Problem 1DE Problem 1E Problem 2E Problem 3E: A portion of a two-dimensional "slab" of NaCl(s) is shown here (see Figure 8.2) in which the ions... Problem 4E Problem 5E Problem 6E: Incomplete Lewis structures for the nitrous acid molecule, HNO2, and the nitrite ion, NO2 are shown... Problem 7E Problem 8E Problem 9E Problem 10E: True or false: The hydrogen atom is most stable when it has a full octet of electrons. How many... Problem 11E: Consider the element silicon, Si. Write its electron configuration. How many valence electrons does... Problem 12E: Write the electron configuration for the element titanium, Ti. How many valence electrons does this... Problem 13E Problem 14E: What is the Lewis symbol for each of the following atoms or ions? K, As, Sn2+ , N3- . Problem 15E: Using Lewis symbols, diagram the reaction between magnesium and oxygen atoms to give the ionic... Problem 16E: Use Lewis symbols to represent the reaction that occurs between Ca and F atoms. What is the chemical... Problem 17E: Predict the chemical formula of the ionic compound formed between the following pairs of elements:... Problem 18E Problem 19E Problem 20E Problem 21E: Is lattice energy usually endothermic or exothermic? Write the chemical equation that represents the... Problem 22E: NaCI and KF have the same crystal structure. The only difference between the two is the distance... Problem 23E Problem 24E Problem 25E: Consider the ionic compounds KF, NaCl, NaBr, and LiCl. Use ionic radii (Figure 7.8) to estimate the... Problem 26E: Which of the following trends in lattice energy is due to differences in ionic radii? NaC1 >RbBr... Problem 27E: Energy is required to remove two electrons from Ca to form Ca2+ , and energy is required to add two... Problem 28E Problem 29E: Use data from Appendix C, Figure 7.10, and Figure 7.12 to calculate the lattice energy of RbCI. Problem 30E Problem 31E Problem 32E Problem 33E: Using Lewis symbols and Lewis structures, diagram the formation of SiCl4from Si and CI atoms,... Problem 34E: Use Lewis symbols and Lewis structures to diagram the formation of PF3 from P and F atoms, showing... Problem 35E Problem 36E Problem 37E Problem 38E: What is the trend in electronegativity going from left to right in a row of the periodic table? How... Problem 39E Problem 40E: By referring only to the periodic table, select the most electronegative element in group 6A; the... Problem 41E: which of the following bonds are polar? B-F, Cl-Cl, Se-O, H-I Which is the more electronegative atom... Problem 42E: Arrange the bonds in each of the following sets in order of increasing polarity: C- F, 0-F, Be-F;... Problem 43E Problem 44E Problem 45E: In the following pairs of binary compounds, determine which one is a molecular substance and which... Problem 46E Problem 47E Problem 48E: Write Lewis structures for the following: H2CO (both H atoms are bonded to C), H2O2, C2F6 (contains... Problem 49E Problem 50E: Draw the dominant Lewis structure for the phosphorus trifluoride molecule, PF3. Determine the... Problem 51E: Write Lewis structures that obey the octet rule for each of the following, and assign oxidation... Problem 52E Problem 53E Problem 54E Problem 55E Problem 56E Problem 57E Problem 58E Problem 59E Problem 60E Problem 61E Problem 62E: 8.62 For Group 3A-7A elements in the third row of the periodic table and beyond, the octet rule is... Problem 63E: Draw the Lewis structures for each of the following ions or molecules. Identify those in which the... Problem 64E Problem 65E: In the vapor phase, BeCl2exists as a discrete molecule. Draw the Lewis structure of this molecule,... Problem 66E:
8.66
Describe the molecule xenon trioxide, XeO3, using four possible Lewis structures, one each... Problem 67E:
8.67 There are many Lewis structures you could draw for sulfuric acid, H2SO4 (each H is bonded to... Problem 68E Problem 69E: Using Table 8.3, estimate H for each of the following gas-phase reactions (note that lone pairs on... Problem 70E: Using Table 8.3, estimate H for the following gas-phase reactions: Problem 71E: State whether each of these statements is true or false. The longer the bond, the larger the bond... Problem 72E Problem 73E Problem 74E Problem 75E Problem 76E Problem 77AE: A new compound is made that has a C-C bond length of 1.15 A. Is this bond likely to be a single,... Problem 78AE: A new compound is made that has an N-N bond length of 1.26 A. Is this bond likely to be a single,... Problem 79AE Problem 80AE Problem 81AE: An ionic substance of formula MX has a lattice energy of 6 x 103 kJ/mol. Is the charge on the ion M... Problem 82AE Problem 83AE Problem 84AE Problem 85AE: Consider the collection of nonmetallic elements 0, P, Te, I, and B. Which two would form the most... Problem 86AE: The substance chlorine monoxide, CIO(g), is important in atmospheric processes that lead to... Problem 87AE:
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a. using the electronegativities of Br and Cl, estimate the partial charges on the atoms... Problem 88AE Problem 89AE: Although I3- is a known ion, F3- is not. a. Draw the Lewis structure for 13- (it is linear, not a... Problem 90AE: Calculate the formal charge on the indicated atom in each of the following molecules or ions: a. the... Problem 91AE: The hypochlorite ion, CIO- , is the active ingredient in bleach. The perchlorate ion, CIO4- a main... Problem 92AE Problem 93AE: a. Triazine, C3 H3N3, is like benzene except that intriazine every other group is replaced by a... Problem 94IE Problem 95IE Problem 96IE Problem 97IE Problem 98IE Problem 99IE Problem 100IE Problem 101IE Problem 102IE Problem 103IE:
8.103 The compound chloral hydrate, known in detective stories as knockout drops, is composed... Problem 104IE: Barium azide is 62.04% Ba and 37.96% N. Each azide ion has a net charge of 1 - a. Determine the... Problem 105IE: Acetylene (C2H2) and nitrogen (N2) both contain a triple bond, but they differ greatly in their... Problem 106IE Problem 107IE Problem 108IE:
8.108 Formic acid has the chemical formula HCOOH. It is a colorless liquid that has a... Problem 109IE Problem 110IE format_list_bulleted