The higher magnitude of the ECT term is qualitatively related to the larger Δρ(r) surface. For instance, the ScSPhos and MnSPhos systems (relative higher |ECT| values of 8.9 and ⁓8. respectively, which agree to the low magnitude of the ECT values and smaller Δρ(r) surface. The same interpretation is obtained from the analysis of the adatom-doped phosphorene nanosheets.