In the light of the generalized philicity concept, intermolecular reactivity of some selected systems is analyzed and the concept of group philicity (ω g ) has been proposed. It can be found that DFT offers the possibility to calculate important functional group properties from the first principles in a non-empirical way. Unified philicity clearly predicts the exact reactivity trends for all the selected systems. In conjunction with the electrophilicity, ωg+ offers direct availability of charge distributions of molecular systems in a more pronounced way than the relative electrophilicity/nucleophilicity and the group softness and might be of importance in reactivity studies.