exam one - ES260 Materials Science Practise Exam 1 Prof....

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ES260 Materials Science Practise Exam 1 Prof. Don H. Rasmussen St. Name:________________________________ St. Number:________________ 1. (15 pts.)Calculate the ionic packing factor for CsCl, which has the crystal structure shown below. The chloride ions at the corners of the cube are in contact with cesium ion the body center site in the cube. The radius, r, of the cesium ion is 0.170 nm. The radius of the chloride ion is 0.181 nm. (15 pts). 2. (15 pts.) The second X-ray diffraction peak for Pb (FCC) occurs at 2Q=36.3 o . If the x-ray wavelength of 0.1542 nm, what is the atomic radius of Pb? Hint: FCC allowed peaks are for plane with Miller indices that are all even or all odd: 3. (10 pts.) Provide the correct notation to name the two planes shown below. A. _______________ B. _______________
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4. (10 pts.) Provide the correct notation to name the directions C and D shown in the figure below. C. _______________
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This note was uploaded on 11/03/2009 for the course ES ES 260 taught by Professor Suni during the Spring '09 term at Clarkson University .

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exam one - ES260 Materials Science Practise Exam 1 Prof....

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