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## Main Question or Discussion Point

need help working out this problem. if you have a simple cubic lattice characterised using x-ray diffraction with a wavelegth of 1.6[tex]\dot{A}[/tex]. The main peak in the scan is (222) and the angle is 32 degrees. By using braggs law to find the lattice constant do you just sub in the values and solve for d? (n[tex]\lambda[/tex]=dSin[tex]\theta[/tex]. If so what value do you use for "n".