Question: Potassium iodide (KI) has the same crystalline structure as NaCl, with atomic planes separated by 0.353 nm. A monochromatic x-ray beam shows first-order diffraction maximum

Potassium iodide (KI) has the same crystalline structure as NaCl, with atomic planes separated by 0.353 nm. A monochromatic x-ray beam shows first-order diffraction maximum when the grazing angle is 7.60°. Calculate the x-ray wavelength.

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