The resulting E TO -E ATO values for Au n Pt 140-n stoichiometries with n = 10, 90, 93, 96, and 130 are 2.08, -0.82, -1.18, -0.26, and 0.63 eV, respectively. These results confirm both the composition-induced shape transition and that the EMT approach can qualitatively approximate the properties of bimetallic AuPt NPs.