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Problem 37c
Write the Lewis symbol for each atom or ion. c. S
Problem 37d
Write the Lewis symbol for each atom or ion. d. S2-
Problem 40a,d
Write the Lewis symbols for the ions in each ionic compound. a. SrO d. RbF
Problem 40b
Write the Lewis symbols for the ions in each ionic compound. b. Li2S
Problem 40c
Write the Lewis symbols for the ions in each ionic compound. c. CaI2
Problem 42
Use Lewis symbols to determine the formula for the compound that forms between each pair of elements. a. Sr and P b. Ba and S c. Sr and Se d. Rb and I
Problem 47
The lattice energy of CsF is -744 kJ/mol, whereas that of BaO is -3029 kJ/mol. Explain this large difference in lattice energy.
Problem 48
Arrange these compounds in order of increasing magnitude of lattice energy: CaO, NaBr, CsI, BaS.
- Use covalent Lewis structures to explain why each element or family of elements occurs as diatomic molecules: a. hydrogen b. the halogens c. oxygen d. nitrogen.
Problem 51
Problem 55a,b,c
Write the Lewis structure for each molecule. a. PH3 b. SCl2 c. HI
Problem 55d
Write the Lewis structure for each molecule. d. CH4
Problem 57a
Write the Lewis structure for each molecule. a. SF2
Problem 57b
Write the Lewis structure for each molecule. b. SiH4
Problem 57d
Write the Lewis structure for each molecule. d. CH3SH (C and S central)
Problem 58
Write the Lewis structure for each molecule. a. CH2O b. C2Cl4 c. CH3NH2 d. CFCl3 (C central)
Problem 59a
Determine if a bond between each pair of atoms would be pure covalent, polar covalent, or ionic. a. Ba and O
Problem 61
Refer to Figure 10.10 to estimate the percent ionic character of the Hbr bond.
Problem 62a
Draw the Lewis structure for ClF with an arrow representing the dipole moment.
Problem 62b
Refer to Figure 10.10 to estimate the percent ionic character of the ClF bond.
Problem 64b
Write the Lewis structure for each molecule or ion. b. OH-
Problem 64c
Write the Lewis structure for each molecule or ion. c. BrO-
Problem 67a
Write a Lewis structure that obeys the octet rule for each molecule or ion. Include resonance structures if necessary and assign formal charges to each atom. a. SeO2
Problem 70
Use formal charges to identify the better Lewis structure.
Problem 71
How important is the resonance structure shown here to the overall structure of carbon dioxide? Explain.
Problem 73
In N2O, nitrogen is the central atom and the oxygen atom is terminal. In OF2, however, oxygen is the central atom. Use formal charges to explain why.
Problem 75
Draw the Lewis structure (including resonance structures) for the acetate ion (CH3COO-). For each resonance structure, assign formal charges to all atoms that have formal charge.
Problem 76
Draw the Lewis structure (including resonance structures) for methyl azide (CH3N3). For each resonance structure, assign formal charges to all atoms that have formal charge.
Problem 77
What are the formal charges of the atoms shown in red?
Problem 78
What are the formal charges of the atoms shown in red?
Problem 79b
Write the Lewis structure for each molecule (octet rule not followed). b. NO2