The heats of formation, bond dissociation energies (BDEs), fluoride affinities (FA), fluorocation affinities (FCA), electron affinities (EA), and ionization energies (IP) of TeF n (n = 1−6) have been predicted using the Feller−Peterson−Dixon (FPD) approach. To benchmark the approach, the bond dissociation energies of Te 2 and TeO, the heats of formation of Te 2 , TeH 2 , TeO, and TeO 2 , and the electron affinity for TeO and TeO 2 were calculated as there are experimental thermodynamic data available for these tellurium compounds, which allow confirmation of the heat of formation of Te gas as ΔH f,0K (Te) = 50.7 ± 0.6 kcal/mol. Spin−orbit corrections are required for good results and cannot be ignored. A comparison among fluoride affinities, fluorocation affinities, electron affinities, and ionization energies of TeF n and SeF n is reported.