Calculate the density of atoms along  in molybdenum (Mo) . Use only the information provided in your class Periodic Table, and express your answer in units of atoms/cm
Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a wavelength ë=3.09...
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