NAME:_________________________ P

X-rays are used to determine the crystal structures of solids because (A) the wavelengths of X-rays are much shorter than atomic spacings in crystals. (B) the wavelengths of X-rays are compareable to than atomic spacings in crystals. (C) the wavelengths of X-rays are much longer than atomic spacings in crystals. (D) they are easily refracted. ................
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