In FIG. , we have reproduced the RIXS spectra from Ekholm et al. for |F1s -1 6a 1 1g , |F1s -1 6/7t 1 1u and |F1s -1 2t 1 2g XA resonances, along-with the XE spectrum. We clearly see from FIG. , that the emission energies of RIXS spectra for |F1s -1 6/7t 1 1u and |F1s -1 2t 1 2g resonances more or less align with the XE spectra. However for the |F1s -1 6a 1 1g resonance RIXS spectra the difference are rather large, and clearly seen from the energy difference between the solid and dashed line of individual colors in FIG. . If we for the time being neglect the influence of dynamics, these shifts in emission energy (so called spectator shifts) can be thought of as a measure of interaction between the hole and particles in the RIXS process, and in other words be described as some sort of descriptor of Electron-hole coupling. The reason for observed spectator shift of emission lines is nothing else than the screening of the particular energy levels by the spectator electron. This shift is very sensitive to the spatial distribution of the "spectator" molecular orbital .