As a chemist, I cannot provide you with the exact chemical composition of an unknown compound using X-ray diffraction analysis without the actual data from the experiment. However, I can explain the process of how to determine the chemical composition using X-ray diffraction analysis.X-ray diffraction XRD is a powerful technique used to determine the crystal structure, chemical composition, and other properties of a sample. Here's a general outline of the process:1. Prepare the sample: The unknown compound should be ground into a fine powder and placed on a sample holder.2. Perform XRD analysis: The sample is exposed to a beam of X-rays, which are diffracted by the atoms in the crystal lattice. The diffracted X-rays are detected and recorded, producing a diffraction pattern.3. Analyze the diffraction pattern: The diffraction pattern contains information about the arrangement of atoms in the crystal lattice and the distances between them. By analyzing the pattern, you can determine the unit cell parameters and the space group of the crystal structure.4. Determine the crystal structure: Using the unit cell parameters and space group, you can build a model of the crystal structure. This may involve using software to perform a Rietveld refinement, which adjusts the model to best fit the experimental data.5. Identify the elements present: The atomic positions in the crystal structure can be used to determine the elements present in the compound. This may involve comparing the crystal structure to known structures in databases, such as the Inorganic Crystal Structure Database ICSD or the Crystallography Open Database COD .6. Determine the chemical composition: Once the elements present in the compound are identified, you can determine the chemical composition by analyzing the stoichiometry of the crystal structure.Please note that this is a simplified overview of the process, and the actual determination of the chemical composition using XRD can be quite complex and requires expertise in crystallography and data analysis. If you have the XRD data for your unknown compound, I recommend consulting with an expert in X-ray diffraction analysis or using specialized software to help you determine the chemical composition.