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7.13 Figure 7-2 depicts the interactions of an ion with its first nearest neighbors, second nearest neighbors, and third nearest neighbors in a lattice, (a) Would the interactions with the fourth nearest neighbors be attractive or repulsive? (b) Based on Coulomb's law, how would the relative sizes of the terms compare if the potential energy were expressed as
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Chemistry for Engineering Students
- Without consulting any tables, arrange the following sub- stances in order and explain your choice of order: (a) Mg²+, Ar, Br¯, Ca²* in order of increasing radius (b) Na, Na*, O, Ne in order of increasing ionization energy (c) H, F, Al, O in order of increasing electronegativityarrow_forward2. Which one of each of the following pairs has the higher ionization energy? Explain in detail for each case. (a) Na or K (b) Ве or B (с) В or C (d) N or O F or Ne (f) Mg or Mg* Ne or Naarrow_forwardWrite the electron configurations for the following ions, anddetermine which have noble-gas configurations: (a) Co2+ ,(b) Sn2+ , (c) Zr4+ , (d) Ag+, (e) S2- .arrow_forward
- Consider the setup below. 20cm 10cm 1µC -1µC 1µC 1. Which direction will the negative charge in the center be pushed. [Choose one]. (a) The middle charge will experience a force to the left. (b) The middle charge will experience a force to the right. (c) The middle charge won't experience a force either way.arrow_forwardItem 5 Answer the following questions related to the chemical bonding in substances containing Cl. (a) What type of chemical bond is present in the Cl2 molecule? (b) Cl2 reacts with the element Sr to form an ionic compound. Based on periodic properties, identify a molecule, X2, that is likely to react with Sr in a way similar to how Cl2 reacts with Sr. Justify your choice. (c) A graph of potential energy versus internuclear distance for two Cl atoms is given below. On the same graph, carefully sketch a curve that corresponds to potential energy versus internuclear distance for two Br atoms. (d) In the box below, draw a complete Lewis electron-dot diagram for the C2Cl4 molecule. (e) Answer the following based on the diagram you drew above. (i) What is the hybridization of the CC atoms in C2Cl4? (ii) What is the approximate chlorine-carbon-chlorine bond angle in C2Cl4? (iii) Is the C2Cl4 molecule…arrow_forward7. Which of the following has the smallest ionic radius? (А) рз- (В) к1* (C) Sc3+ (D) Ararrow_forward
- In a lithium-ionbattery that is discharging to power a device, for every Li+that inserts into the lithium cobalt oxide electrode, a Co4+ion must be reduced to a Co3+ ion to balance charge. Usingthe CRC Handbook of Chemistry and Physics or other standardreference, find the ionic radii of Li+, Co3+, and Co4+. Orderthese ions from smallest to largest.arrow_forwardA.) What is meant by the term polarizability? B.) Which of the following atoms would you expect to be most polarizable? O2, S, Se, or Tearrow_forwardChemistry Choose the atom or ion in each pair which best fulfills the given criterion: (i) Greater atomic radius: In or Sn (ii) Higher first ionization energy: Be or B (iii) Strongest lattice energy: CaF2 or BaF2 (iv) Greater electron affinity: Se or Sn (v) Largest ionic radius: H+ or H-arrow_forward
- Given the following information, use the Kapustinskii equation (shown below and included in the additional information sheet I encouraged you to download and have available) to calculate the lattice energy for Cr2S3 in kJ/mol. Ionic radii: Cr3+ (62 pm), S2− (184 pm) d* = 34.5 pm Κ = 1.21 × 105 kJ pm/molarrow_forwardCombine two elements (cesium, berryllium, bromine, and flourine) from the following: ( K, Mg, Mn, N, O, Fe, Cu, H, S, Kr,C, Na, Br, Cl) to form 5 different molecules, including one oxy atomic moleculeand one diatomic molecule from the given elements(cesium, berryllium, bromine, and flourine), and determine the following: a) the electronegativity of the compound (show your calculation) b) Is the selected molecule polar, or not? What type of bond is formed based onwhat you learned? Is it a strong or weak bond?arrow_forwardUse Born-Mayer equation to calculate the lattice energy for PbS (it crystallizes in theNaCl structure). Then, use the Born–Haber cycle to obtain the value of lattice energy for PbS.You will need the following data following data : ΔH Pb(g) = 196 kJ/mol; ΔHf PbS = –98kJ/mol; electron affinities for S(g)→S- (g) is -201 kJ/mol; ) S- (g) →S2-(g) is 640kJ/mol. Ionizationenergies for Pb are listed in Resource section 2, p.903. Remember that enthalpies of formationare calculated beginning with the elements in their standard states (S8 for sulfur). Diatomicsulfur, S2, is formed from S8 (ΔHf: S2 (g) = 535 kJ/mol. Can you just do the Born-Haber part?arrow_forward
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