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Old Oct 30th 2014, 02:17 PM   #1
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X-ray diffraction help

X-ray diffraction data were collected from PbS. The material is cubic, with four formula units per unit cell. The first eight lines in an X-ray powder diffraction trace correspond to the following reflections: 111, 200, 311, 222, 400, 331 and 420. The ratio of intensities for the 420 and 331 reflections was 1.7:1.

Use these observations to determine whether galena has a structure similar to cesium chloride, sodium chloride or zinc sulfide.

How do I even begin this?
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Old Oct 31st 2014, 09:16 AM   #2
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Find diffraction traces for cesium chloride, sodium chloride or zinc sulfide
Ideally look for descriptions which follow the same style as the description in the question.
Any of them follow a similar pattern to the one described?
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