Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393912340
Author: Thomas R. Gilbert, Rein V. Kirss, Natalie Foster
Publisher: W. W. Norton & Company
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11.Demonstrate the fraction of these sites in an FCC lattice that Fe2+ ions would need to occupy in order to maintain charge neutrality with the O2– ions sitting in FCC lattice positions of a unit cell.
12.Describe how the bonding and atomic arrangement in diamond differs from that in other allotropes of carbon such as graphite, graphene, and fullerenes (Buckyballs).
13.The silicate anion (SiO44-) “orthosilicate” is the basic building block of all silicate materials. Draw the Lewis Dot Structure for the (SiO44-) ion. Based on your Lewis dot structure, what is the predicted geometry for the (SiO44-) ion? What kind of bonds occur between Si and O in the (SiO44-) ion?
Show that the radius of the largest sphere that can be placed in a tetrahedral interstitial site in an fcc lattice is 0.225r1, where r1 is the radius of the atoms making up the lattice. (Hint: Consider a cube with the centers of fourspheres placed at alternate corners, and visualize the tetrahedral site at the center of the cube. What is the relationship between r1 and the length of a diagonal of a face? The length of a body diagonal?)
part 2
The structure of the unit cell when CaF2 crystallizes is shown below:
What is the arrangement of the Ca2+ ions (white spheres)?
FCC
SC
HCP
BCC
Chapter 18 Solutions
Chemistry: An Atoms-Focused Approach
Ch. 18 - Prob. 18.1VPCh. 18 - Prob. 18.2VPCh. 18 - Prob. 18.3VPCh. 18 - Prob. 18.4VPCh. 18 - Prob. 18.5VPCh. 18 - Prob. 18.6VPCh. 18 - Prob. 18.7VPCh. 18 - Prob. 18.8VPCh. 18 - Prob. 18.9VPCh. 18 - Prob. 18.10VP
Ch. 18 - Prob. 18.11VPCh. 18 - Prob. 18.12VPCh. 18 - Prob. 18.13VPCh. 18 - Prob. 18.14VPCh. 18 - Prob. 18.15VPCh. 18 - Prob. 18.16VPCh. 18 - Prob. 18.17VPCh. 18 - Prob. 18.18VPCh. 18 - Prob. 18.19QACh. 18 - Prob. 18.20QACh. 18 - Prob. 18.21QACh. 18 - Prob. 18.22QACh. 18 - Prob. 18.23QACh. 18 - Prob. 18.24QACh. 18 - Prob. 18.25QACh. 18 - Prob. 18.26QACh. 18 - Prob. 18.27QACh. 18 - Prob. 18.28QACh. 18 - Prob. 18.29QACh. 18 - Prob. 18.30QACh. 18 - Prob. 18.31QACh. 18 - Prob. 18.32QACh. 18 - Prob. 18.33QACh. 18 - Prob. 18.34QACh. 18 - Prob. 18.35QACh. 18 - Prob. 18.36QACh. 18 - Prob. 18.37QACh. 18 - Prob. 18.38QACh. 18 - Prob. 18.39QACh. 18 - Prob. 18.40QACh. 18 - Prob. 18.41QACh. 18 - Prob. 18.42QACh. 18 - Prob. 18.43QACh. 18 - Prob. 18.44QACh. 18 - Prob. 18.45QACh. 18 - Prob. 18.46QACh. 18 - Prob. 18.47QACh. 18 - Prob. 18.48QACh. 18 - Prob. 18.49QACh. 18 - Prob. 18.50QACh. 18 - Prob. 18.51QACh. 18 - Prob. 18.52QACh. 18 - Prob. 18.53QACh. 18 - Prob. 18.54QACh. 18 - Prob. 18.55QACh. 18 - Prob. 18.56QACh. 18 - Prob. 18.57QACh. 18 - Prob. 18.58QACh. 18 - Prob. 18.59QACh. 18 - Prob. 18.60QACh. 18 - Prob. 18.61QACh. 18 - Prob. 18.62QACh. 18 - Prob. 18.63QACh. 18 - Prob. 18.64QACh. 18 - Prob. 18.65QACh. 18 - Prob. 18.66QACh. 18 - Prob. 18.67QACh. 18 - Prob. 18.68QACh. 18 - Prob. 18.69QACh. 18 - Prob. 18.70QACh. 18 - Prob. 18.71QACh. 18 - Prob. 18.72QACh. 18 - Prob. 18.73QACh. 18 - Prob. 18.74QACh. 18 - Prob. 18.75QACh. 18 - Prob. 18.76QACh. 18 - Prob. 18.77QACh. 18 - Prob. 18.78QACh. 18 - Prob. 18.79QACh. 18 - Prob. 18.80QACh. 18 - Prob. 18.81QACh. 18 - Prob. 18.82QACh. 18 - Prob. 18.83QACh. 18 - Prob. 18.84QACh. 18 - Prob. 18.85QACh. 18 - Prob. 18.86QACh. 18 - Prob. 18.87QACh. 18 - Prob. 18.88QACh. 18 - Prob. 18.89QACh. 18 - Prob. 18.90QACh. 18 - Prob. 18.91QACh. 18 - Prob. 18.92QACh. 18 - Prob. 18.93QACh. 18 - Prob. 18.94QACh. 18 - Prob. 18.95QACh. 18 - Prob. 18.96QACh. 18 - Prob. 18.97QACh. 18 - Prob. 18.98QACh. 18 - Prob. 18.99QACh. 18 - Prob. 18.100QACh. 18 - Prob. 18.101QACh. 18 - Prob. 18.102QACh. 18 - Prob. 18.103QACh. 18 - Prob. 18.104QACh. 18 - Prob. 18.105QACh. 18 - Prob. 18.106QACh. 18 - Prob. 18.107QACh. 18 - Prob. 18.108QACh. 18 - Prob. 18.109QACh. 18 - Prob. 18.110QACh. 18 - Prob. 18.111QACh. 18 - Prob. 18.112QACh. 18 - Prob. 18.113QACh. 18 - Prob. 18.114QACh. 18 - Prob. 18.115QACh. 18 - Prob. 18.116QACh. 18 - Prob. 18.117QACh. 18 - Prob. 18.118QACh. 18 - Prob. 18.119QACh. 18 - Prob. 18.120QACh. 18 - Prob. 18.121QACh. 18 - Prob. 18.122QACh. 18 - Prob. 18.123QACh. 18 - Prob. 18.124QACh. 18 - Prob. 18.125QACh. 18 - Prob. 18.126QACh. 18 - Prob. 18.127QACh. 18 - Prob. 18.128QACh. 18 - Prob. 18.129QACh. 18 - Prob. 18.130QACh. 18 - Prob. 18.131QACh. 18 - Prob. 18.132QACh. 18 - Prob. 18.133QA
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- An AX ceramic compound has an HCP crystal structure. If the radii of the A and X ions are 0.12 and 0.261 nm, respectively, and the respective atomic weights are 42.81 and 97.73 g/mol, what is the density (in g/cm3) of this material?arrow_forward1. Tantalum is rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It has a density of 16.4 kg/L and a molecular weight of 180.948 g/mol. What is the (A) atomic radius in cm, (B) volume in cm^3 of Ta if it adopts the body centered cubic unit structure and (C) volume of unit cellarrow_forwardCalculate the empirical formula and density of nitinol, the memory alloy composed of nickel and titanium with the unit cell shown in Figure P12.9. The atomic radii of Ni and Ti are 124 and 147 pm, respectively. lod oi shizo = Ti = Niarrow_forward
- The unit cell of an intermetallic compound consists of a face-centered cube that has an atom of element X at each corner and an atom of element Y at the center of each face. What is the formula of the compound ?arrow_forwardTwo possible cubic crystal structures are shown in figure 3. Part (a) shows the fcc structure, in which atoms are touching along a face-diagonal. Part (b) shows the bcc structure,in which atoms are touching along a body diagonal of the cube.Calculate the packing fractions of each of these structures. Which one of them is closepacked?arrow_forward1. A metallic solid ingot has a mass of 14.7 grams. It was loaded into a graduated cylinder containing 40.0 mL or water. Upon addition of the ingot, the volume of the water and the ingot was 41.6 mL. What is the density of the ingot? 2. Assuming the solid ingot in question 1 is polonium (Po, element 84) which packs in a primitive cubic unit cell structure calculate the packing efficiency of the unit cell? Atoms touch along edge. a = 2r Carrow_forward
- Which packing scheme describes the structure of zinc(II) sulfide? closest-packed sulfide ions with zinc(II) ions occupying all of the tetrahedral interstices closest-packed sulfide ions with zinc(II) ions occupying 1/2 of the tetrahedral interstices closest-packed sulfide ions with zinc(II) ions occupying 1/4 of the tetrahedral interstices closest-packed zinc(II) ions with sulfide ions occupying all of the tetrahedral interstices closest-packed zinc(II) ions with sulfide ions occupying 1/2 of the tetrahedral interstices closest-packed zinc(II) ions with sulfide ions occupying 1/4 of the tetrahedral intersticesarrow_forwardA metal crystallizes in the face-centered cubic (FCC) lattice. The density of the metal is 10500 kg/m', and the length of a unit cell edge, a, is 408.6 pm. Calculate the mass of one metal atom. mass: Identify the metal. O nickel O rhodium O copper O silverarrow_forwardWhich of the following statements correctly describes the NaCl structure type? a. NaCl structure is composed of hexagonal close-packing of Cl- anions with Na+ cations occupying every tetrahedral hole, this arrangement of cations and anions results in a 6:6 cation:anion coordination b. NaCl structure is composed of cubic close-packing of Cl- anions with Na+ cations occupying every octahedral hole, this arrangement of cations and anions results in a 6:6 cation:anion coordination c. NaCl structures is composed of cubic close-packing of Cl- anions with Na+ cations occupying every second tetrahedral hole, this arrangement of cations and anions results in a 4:4 cation:anion coordination d. No answer text provided.arrow_forward
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