Lead 207 is one of 4 predominate isotopes of lead. Because it’s spin state is different the other common isotopes it’s abundance in a sample can be measured by peak splitting in an NMR experiment. In this dry lab you will continue refining excel skills, although you do not have to program this time. The Lorentzian shape of the NMR peak is modeled, the areas under the peaks calculated and used to determine the % Pb 207 present