In the Introduction, we asked if a more aromatic (antiaromatic) residual of the 3 n,* state correlates with a lower (higher) vertical excitation energy. However, this hypothesis oversimplifies as the vertical excitation energy also depends on (de)stabilizing features of the S0 state, including (anti)aromaticity and several other factors (see the Qualitative Theory section). Still, the monoheteroaromatics with residuals that lean toward aromaticity (3 and 4) are the two with lowest E( 3 n,*) (2.6 and 2.9 eV, respectively), while thiopyrylium (6), with its antiaromatic residual, and the S0 nonaromatic pyrylium ( ) have E( 3 n,*) of 5.5 and 5.8 eV, respectively. The same relationship is observed for the 1 n,* states (3.1 (3), 3.8 (4), 5.1 (1), 5.1