Under appropriate conditions, molybdenum emits X – rays that have a characteristic wavel...

Under appropriate conditions, molybdenum emits X – rays that have a characteristic wavelength of 0.711 These X – rays are used in diffraction experiments to determine the structures of molecules. (a) Why are X – rays, and not visible light, suitable for the determination of structure at the atomic level? (b) How fast would an electron have to be moving to have the same wavelength as these X-rys?