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Unformatted text preview: lower coefficient of thermal expansion. Since C has the lowest curvature, it will have the highest coefficient of thermal expansion. c) Diamond has the highest bond energy, melting temperature and is very hard. Polyethylene, on the other hand, is very flexible and has a much lower melting point. Copper has intermediate values of melting temperature and elastic stiffness. From parts a and b, we can see that Diamond is curve `a’, Copper is `b’ and Polyethylene is `c. 3. (5 points) ZnO is more Ionic as it has a greater difference is electronegativity (X) between the two constituent atoms. (Electronegativity values obtained from Figure 7 in Callister) GaAs : X(As) – X(Ga) =2.0 – 1.6 = 0.4 ZnO: X(O) – X(Zn) = 3.5 – 1.6 = 1.9 4. Problem 2.9 from Callister Problem 2.11 from Callister Problem 2.14 from Callister...
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This note was uploaded on 03/15/2010 for the course MSE 280 taught by Professor Johnson during the Fall '08 term at University of Illinois, Urbana Champaign.
- Fall '08