a- calculate the atomic backing factor for Bc..

e. What type of defect is a vacancy and illustrate how that is different from an interstitial defect? f. What is the fraction of vacancies present at the melting temperature of Cu (1084°C)? Describe the feature (green parallel structures) that is noted by the arrow labeled c.

Find the Miller indices of the direction shown below. Show all steps and working. Use the correct type of bracket and bar notation for negative indices DL 1/2 1/4 a

Some of the metals possess a body-centered crystal structure. Which of the following statements is correct about the structure? a. There are atoms found at the center of each face of the cube. b. It has a density lower than scc. c. The corner atoms touch the center atom but not each other. d. It has a packing efficiency (74%) greater than scc and bcc.