Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 8, Problem 8.12PAE
Interpretation Introduction
Interpretation:
The lower coordination number for a cubic structure relative to a hexagonal structure should be explained.
Concept introduction:
- The atoms (molecules or ions) that constitute the solid can be arranged appropriately such that most of the space in the crystal is utilized.
- Greater the space occupied, greater is the packing efficiency
- The number of nearest neighbors surrounding a particular atom (molecule or ion) is called as coordination number.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Explain in detail and with the aid of diagrams the absence of the C and F type lattices in the Tetragonal system.
1. Using ionic radii show what is the coordination number and structure of FeO.
a Spinels are solids with the general formula
M²+ (M¹³+)₂ 04 (where M²+ and M¹³ are
3+
3+
metal cations of the same or different metals).
The best-known example is common magnetite,
Fe3O4 [which you can formulate as
(Fe³+)₂04].
(Fe²+)
A crystal of a spinel
Given its name, it is evident that magnetite is
ferromagnetic. How many unpaired electrons are
there in iron (II) and in iron(III) ions?
Iron(II) ion:
unpaired electron(s)
Iron(III) ion:
unpaired electron(s)
Chapter 8 Solutions
Chemistry for Engineering Students
Ch. 8 - Prob. 1COCh. 8 - • describe the arrangement of atoms in the common...Ch. 8 - • use bind theory to describe bonding in solids.Ch. 8 - Prob. 4COCh. 8 - Prob. 5COCh. 8 - Prob. 6COCh. 8 - Prob. 7COCh. 8 - • explain the connection between intermolecular...Ch. 8 - Prob. 9COCh. 8 - Prob. 10CO
Ch. 8 - Prob. 8.1PAECh. 8 - Why is the C 60form of carbon called...Ch. 8 - Prob. 8.3PAECh. 8 - Prob. 8.4PAECh. 8 - What is the relationship between the structures of...Ch. 8 - Use the web to look up information on nanotubes....Ch. 8 - Prob. 8.7PAECh. 8 - Prob. 8.8PAECh. 8 - Prob. 8.9PAECh. 8 - Using circles, draw regular two-dimensional...Ch. 8 - Prob. 8.11PAECh. 8 - Prob. 8.12PAECh. 8 - Prob. 8.13PAECh. 8 - Prob. 8.14PAECh. 8 - 8.13 What is the coordination number of atoms in...Ch. 8 - Prob. 8.16PAECh. 8 - Prob. 8.17PAECh. 8 - 8.16 Iridium forms a face-centered cubic lattice,...Ch. 8 - 8.17 Europium forms a body-centered cubic unit...Ch. 8 - 8.18 Manganese has a body-centered cubic unit cell...Ch. 8 - Prob. 8.21PAECh. 8 - 8.20 How many electrons per atom are delocalized...Ch. 8 - Prob. 8.23PAECh. 8 - Prob. 8.24PAECh. 8 - Prob. 8.25PAECh. 8 - 8.24 What is the key difference between metallic...Ch. 8 - Prob. 8.27PAECh. 8 - Prob. 8.28PAECh. 8 - 8.25 Draw a depiction of the band structure of a...Ch. 8 - Prob. 8.30PAECh. 8 - Prob. 8.31PAECh. 8 - Prob. 8.32PAECh. 8 - Prob. 8.33PAECh. 8 - Prob. 8.34PAECh. 8 - Prob. 8.35PAECh. 8 - Prob. 8.36PAECh. 8 - Prob. 8.37PAECh. 8 - Suppose that a device is using a 15.0-mg sample of...Ch. 8 - 8.35 What is an instantancous dipole?Ch. 8 - 8.36 Why are dispersion forces attractive?Ch. 8 - 8.37 If a molecule is not very polarizable, how...Ch. 8 - 8.38 What is the relationship between...Ch. 8 - Prob. 8.43PAECh. 8 - Prob. 8.44PAECh. 8 - 8.39 Under what circumstances are ion-dipole...Ch. 8 - 8.40 Which of the following compounds would be...Ch. 8 - 8.41 What is the specific feature of N, O, and F...Ch. 8 - Prob. 8.48PAECh. 8 - 8.43 Identify the kinds of intermolecular forces...Ch. 8 - Prob. 8.50PAECh. 8 - Prob. 8.51PAECh. 8 - Explain from a molecular perspective why graphite...Ch. 8 - 8.45 Describe how interactions between molecules...Ch. 8 - 8.46 What makes a chemical compound volatile?Ch. 8 - 8.47 Answer each of the following questions with...Ch. 8 - 8.48 Why must the vapor pressure of a substance be...Ch. 8 - Prob. 8.57PAECh. 8 - Prob. 8.58PAECh. 8 - Prob. 8.59PAECh. 8 - Suppose that three unknown pure substances are...Ch. 8 - 8.51 Suppose that three unknown pure substances...Ch. 8 - 8.52 Rank the following hydrocarbons in order of...Ch. 8 - Prob. 8.63PAECh. 8 - Prob. 8.64PAECh. 8 - Prob. 8.65PAECh. 8 - Prob. 8.66PAECh. 8 - Prob. 8.67PAECh. 8 - Prob. 8.68PAECh. 8 - Why is there no isotactic or syndiotactic form of...Ch. 8 - Prob. 8.70PAECh. 8 - Prob. 8.71PAECh. 8 - Prob. 8.72PAECh. 8 - 8.61 Distinguish between a block copolymer and a...Ch. 8 - Prob. 8.74PAECh. 8 - Prob. 8.75PAECh. 8 - Prob. 8.76PAECh. 8 - Prob. 8.77PAECh. 8 - 8.66 What structural characteristics are needed...Ch. 8 - Prob. 8.79PAECh. 8 - Prob. 8.80PAECh. 8 - Prob. 8.81PAECh. 8 - Prob. 8.82PAECh. 8 - Prob. 8.83PAECh. 8 - Prob. 8.84PAECh. 8 - Prob. 8.85PAECh. 8 - Prob. 8.86PAECh. 8 - 8.87 Use the vapor pressure curves illustrated...Ch. 8 - Prob. 8.88PAECh. 8 - 8.89 The following data show the vapor pressure of...Ch. 8 - Prob. 8.90PAECh. 8 - Prob. 8.91PAECh. 8 - Prob. 8.92PAECh. 8 - Prob. 8.93PAECh. 8 - Prob. 8.94PAECh. 8 - Prob. 8.95PAECh. 8 - 8.96 A business manager wants to provide a wider...Ch. 8 - 8.97 The doping of semiconductors can be done with...Ch. 8 - 8.98 If you know the density of material and the...Ch. 8 - Prob. 8.99PAECh. 8 - Prob. 8.100PAECh. 8 - Prob. 8.101PAECh. 8 - Prob. 8.102PAECh. 8 - 8.103 In previous chapters, we have noted that...Ch. 8 - Prob. 8.104PAECh. 8 - Prob. 8.105PAE
Knowledge Booster
Similar questions
- 77arrow_forwardOn the basis of ionic charge and ionic radii given in Table 1, predict crystal structures for the following materials: a. Cao (b) MnS (c) KBr (d) CsBr b. Justify your selections. Table 1: Ionic Radii for Several Cations and Anions Ionic Radius (nm) Jonic Radias (am) Cation Anion AP 0.053 Br 0.196 Bu 0.136 0.181 0.100 0.133 Cs' 0.170 0.220 Fel Fe K' 0.077 0.140 0.069 0.184 0.138 Mg Mn. 0.072 0.067 Na 0.102 0.069 0.040 0.061arrow_forward3. Calculate the radius of a tantalum atom, given that Ta has a BCC crystal structure, a density of 16.6 g/cm³, and an atomic weight of 180.9 g/mol.arrow_forward
- The number of vacancies in some hypothetical metal increases by a factor of 3 when the temperature is increased from 940 ˚C to 1130 ˚C. Calculate the energy for vacancy formation (in J/mol) assuming that the density of the metal remains the same over this temperature range.arrow_forward3. Calculate the radius of tantalum atom, given that Ta has a BCC crystal structure, a density of 16.6 g/cm?, and an atomic weight of 106.4 g/mol.arrow_forwardMy former question wasn't really answered... I am trying to understand how one comes to the conclusion of the simpliest oxide? Especially an oxide such as Fe3+? What is the step by step formula to figure out the simpliest oxide ion of Fe3+?arrow_forward
- 3. Sketch all the Bravais lattices, why is there no Face centered tetragonal while there is a base centered tetragonal. Which crystal systems are generally seen for metals.arrow_forwardFor each of these solids, state whether you would expect it topossess metallic properties: (a) TiCl4, (b) NiCo alloy, (c) W,(d) Ge, (e) ScN.arrow_forward(a) Answer parts i), i),ii) and iv) side by side so that the relative scales are obvious, include electron occupancy. (i) Draw the band structure of potassium (ii) Draw the band structure of silicon (iii) Draw the band structure of carbon (iv) Draw the band structure of germanium (b) Based on your diagrams, state the order of electrically conductivity for the four elements at 300 K, from the smallest to the highest - explain your choice. Magnesium has an electron configuration of 1s? 2s? 2p° 3s?. Using band diagrams explain why this element is considered an (c) electrical conductor. (d) improve its ability to conduct electricity. What type of extrinsic semiconductor results and explain how the addition of arsenic increases conductivity (use diagrams if necessary)? A small amount of arsenic is added to a sample of silicon to (i) Gallium phosphide (GaP) has a band gap of 2.26 eV. Calculate the wavelength of light emitted in nm (1 eV = 1.6 x 1019 J). (e) (ii) It is required for a…arrow_forward
- two imagesarrow_forward5. Explain why lattice enthalpy calculations based on the Bom-Mayer equation reproduce the experimentally detemined values to 99% for LICI but only 91% for AgCl?arrow_forward4. Briefly explain why chemically similar alkali metal chlorides, NaCl and CsCl, have different crystalline structures, while MnS and NaCl pack in the same crystalline structure.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning