The below table lists diffraction angles for the first three peaks (second -order) of the X-ray diffraction pattern for some metal. Monochromatic x-radiation having a wavelength of (0.1234 nm) was used for BCC crystal ? (a) Determine the lattice constant. (b) radius of atoms. Peak miller Diffraction Number indies Angle (2e) 1 111 80 2 101 96 3 200 102

The below table lists diffraction angles for the first three peaks (second -order) of the X-ray diffraction pattern for some metal. Monochromatic x-radiation having a wavelength of (0.1234 nm) was used for BCC crystal ? (a) Determine the lattice constant. (b) radius of atoms. Peak miller Diffraction Number indies Angle (2e) 1 111 80 2 101 96 3 200 102