In this section, we examine how molecular features such as charge, multiplicity, and molecular weight impact model chemistry accuracy and the performance of BACs. Analyzing the influence of molecular weight reveals a noteworthy advantage of BACs: as shown in Figure , they effectively reduce the systematic errors that tend to accumulate with increasing molecular size. Compared to atom-energy-only corrections, BACs substantially curb error growth as molecular weight rises, making them particularly valuable for larger species. f versus molecular weight for the DLPNO-CCSD(T)-F12d/cc-pVDZ-F12//B97-1/6-31G(D) method, comparing atom-energy-only corrections (AECs) to Petersson-type bond-additivity corrections (BACs). The application of BACs significantly narrows the error distribution, especially for heavier molecules.