Here's the example:

Quote:

C. This is one of the X-ray peaks. It happens to be the one with the smallest angle which I measured as 23.04 degrees. Solving Bragg's Law (with n=1 and wavelength=1.54 ang) we find that 23.04 degrees 2-theta corresponds to a d-spacing of 3.86 angstrom. |

2d(sinθ)=λ

2d(sin 23.04)=1.54

2d(0.391)=1.54

0.782d=1.54

d=1.54/0.782

d=1.969

I'm not sure where I've gone wrong? Any help would be much appreciated!