MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
7th Edition
ISBN: 9781305111219
Author: Donald R. Askeland; Wendelin J. Wright
Publisher: Cengage Learning US
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Chapter 2, Problem 2.18P
To determine
To plot: Melting temperature of the elements in the 1A column of the periodic table versus atomic number. Also, explain the effect on binding energy.
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Sodium chloride (NaCl) has the rock salt crystal structure and a density of 2.17 g/cm³. The atomic weights of sodium and chlorine are
22.99 g/mol and 35.45 g/mol, respectively.
(a) Determine the unit cell edge length.
nm
(b) Determine the unit cell edge length from the radii in the table below assuming that the Nat and Cl- ions just touch each other along
the edges.
nm
Cation
Mg2+
Fe2+
Na+
Ionic Radius (nm)
0.072
0.077
0.102
Anion Ionic Radius (nm)
CI-
0²-
0.181
0.140
1. What is an atom 7
2. Explain briefly the followings:
(i) Unit cell
(ii) Space lattice
(iv) Crystallographic planes.
(ii) Lattice parameters
3. Discuss briefly the following structures for metallic elements:
() Body centred cubic (BCC)
(ii) Face centred cubic (FCC)
(iii) Hexagon close-packed (HCP)
4. What are Miller indices ? What is procedure for finding Miller indices?
5. Discuss important features of Miller indices.
6. How are crystallographic defect classified ?
7. Explain briefly the following point defects :
(1) Vacancy
(ii) Schottky imperfections
(iv) Frenkel defect.
(ii) Interstitialcy
8. Describe briefly the following line defects (disilocations) :
(1) Edge dislocations.
(ii) Screw dislocations.
9. What is Berger's vector ?
10. Give the comparison between edge disloçation and screw dislocations.
11. Discuss briefly the following :
(1) Surface defects.
(ii) Volume defects or three dimensional defects
12. Explain briefly the following :
() Theory of dislocations.
(i) Role and…
Chemistry
Consider FCC copper. If bond energy per atom is 5.62 × 10-19 J, and its atomic radius is 0.128 nm, the surface energy for (100) plane will be
Chapter 2 Solutions
MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
Ch. 2 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Why is it important to consider the structure of a...Ch. 2 - Prob. 2.5PCh. 2 - Prob. 2.6PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10P
Ch. 2 - Write the electron configuration for the element...Ch. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.18PCh. 2 - Prob. 2.19PCh. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - Prob. 2.26PCh. 2 - What are the bonding mechanisms in thermoplastics?Ch. 2 - Prob. 2.28PCh. 2 - Materials such as silicon carbide (SiC) and...Ch. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - Prob. 2.33PCh. 2 - Prob. 2.34PCh. 2 - In order to increase the operating temperature of...Ch. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - Prob. 2.40PCh. 2 - Would you expect MgO or magnesium to have the...Ch. 2 - Would you expect (Al2O3) or aluminum to have the...Ch. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 2 - Steel is coated with a thin layer of ceramic to...Ch. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Prob. 2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51DPCh. 2 - Turbine blades used in jet engines can be made...Ch. 2 - You want to use a material that can be used for...Ch. 2 - Prob. 2.1KP
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