Problem #2: (4)The densities of the elements K, Ca, Sc, and Ti are 0.86, 1.5, 3.2, and 4.5 g/cm³, respectively. One of theseelements crystallizes in a body-centered cubic structure; the other three crystallize in a face-centered cubicstructure. Which one crystallizes in the body-centered cubic structure? Justify your answer.

To solve this problem, we need to identify which of the elements K, Ca, Sc, and Ti crystallizes in a…

Answered: Problem #2: (4) The densities of the…

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter8: Molecules And Materials

Section: Chapter Questions

Problem 8.10PAE

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Figure below shows the first four peaks of the x-ray diffraction pattern for copper, which has a face centered cubic erystal structure; monochromatic x-radiation having a wavelength of 0.1542 nm was used. Reflection indices are presented in the table below. The whole number of wavelengths cquals one. (a) Index (i.e., give h, k, and / indices) for each of these peaks. (b) Determine the interplanar spacing for cach of the peaks. (e) For cach peak, determine the atomic radius for Cu. 40.0 50.0 60.0 70.0 80.0 90.0 Diffraction angle 20 Reflection Indices for First Six Planes 110, 200, 211, 220, 310, 222 Crystal Structure Reflections Present (h +k +) even ВСС FCC h, k, and I either all odd or all even 111, 200, 220, 311, 222, 400 Simple cubic All 100, 110, 111, 200, 210, 211 Intensity (relative)
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