Potassium Iodide (chemical formula: KI) has a face-centered cubic structure (just like sodium chloride). If the distance between crystal planes is d = 0.353 nm and X-rays of wavelength λ = 0.0934 nm are used, what is the smallest angle θ at which a diffraction maximum may be obtained?
A) 9.92°
B) 7.60°
C) 13.3°
D) 15.5°
E) 6.52°

Question

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The Answer of Potassium Iodide (chemical formula: KI) has a face-centered cubic structure (just like sodium chloride). If the distance between crystal planes is d = 0.353 nm and X-rays of wavelength λ = 0.0934 nm are used, what is the smallest angle θ at which a diffraction maximum may be obtained?
A) 9.92°
B) 7.60°
C) 13.3°
D) 15.5°
E) 6.52°

Potassium Iodide (Chemical Formula: KI) Has a Face-Centered Cubic Structure