The powder X-ray diffraction patterns for 1 of the halide salts of Element X is shown below, and its first 7 peaks given in a table. The pattern was obtained using Cu Ka radiation of wavelength = 1.54056 Å, and the halide and element X are in a 1:1 ratio. a) Given the ionic radius of element X is 181 pm, calculate the ionic radius of the halide in pattern C. Pattern C: 20 Intensity 27.518 10000 39.446 1936 48.757 4061 56.912 1257 64.398 1691 71.450 35.725 78.286 39.143