Answer to Question #333157 in Solid State Physics for Johannes Steven

Question

Question 1​​​​​​​​​​​​

 Compute the net potential energy of a simple Na⁺Cl^- pair. The equilibrium distance between the ions is 0.28nm. The potential energy due to repulsion between electrons is given by U_r= β/r⁸

Question 2

2.1​ α-Co has an hcp structure with lattice spacings of a= 2.51 A^o and c = 4.07 A^o, β Co is fcc, with a cubic lattice spacing of 3.55 A^o. What is the difference in density between the two forms?​​

2.2​ Sodium transform from bcc to hcp at about T = 23K. Assuming that the density remains fixed, and the c/ a ratio isideal, calculate the hcp lattice spacing given that the cubic lattice spacing is  a' = 4.23 A^o in the cubic phase.      ​​​

Answer 1

It's been a while since this question is posted here. Still, the answer hasn't been got. Consider converting this question to a fully qualified assignment, and we will try to assist. Please click the link below to proceed: Submit order