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$^{a}$The grid-free DFT value is − 29.74755 a.u. [30]. 

$^{b}$The grid-free DFT value is − 15.48083 a.u. [30]. 

correlation ( E$_{c}$ ), total two-electron potential ( V ee t ), nuclear repulsion ( E$_{nu}$ ), total potential ( V ), electronic ( E$_{el}$ ) and total energy ( E ) respectively, as well as the integrated electron density N . Evidently, as in the LDA case, both sets offer excellent agreement in total energies and component energies with literature values for both molecules. The individual two-body energy terms were not available in the reference output and thus could not be directly compared. As expected, for obvious reasons Set B results are closer to reference values than Set A, but only marginally. For Cl$_{2}$ this is slightly more pronounced than that for HCl. Absolute deviations in total energy for Set B for Cl$_{2}$ and HCl are only 0.00002 and 0.00000 a.u. respectively. In both cases, there is slight improvement in N , as we move from Set A to B. For all practical purposes, Set A is adequate enough for both of them. Note that reference grid-free DFT energies differ substantially from the corresponding grid -DFT values. 

To further demonstrate the accuracy and reliability of present results, in Table II, cal- culated negative eigenvalues for Cl$_{2}$ and HCl (using BLYP XC combination) are presented at the same geometries of previous table, along with those obtained from reference [30]. Once again, excellent agreement is observed for both molecules. Sets A and B results match 

