The first known experimental studies of two-center three-electron bonding involving tellurium in the gas, liquid, or solid state are reported. Ions studied include: [(CH3)(2)TethereforeTe(CH3)(2)](+), [(CH3)(2)TethereforeSe(CH3)(2)](+), [(CH3)(2)TethereforeS(CH3)(2)](+), and [(CH3)(2)TethereforeICH(3)](+). Metastable and collision-induced dissociation tandem mass spectrometry methods were employed to investigate the structures of the ions. The metastable spectra show direct cleavage of the Te therefore Te, Te therefore Se, Te therefore S, and Te therefore I bonds yielding product ions with the charge on the Te containing moiety (that with the lowest ionization energy). Collision-induced dissociation spectra show intense peaks for these same fragments. The collision-induced dissociation spectra also show peaks for almost every possible methyl loss, suggesting large collision-induced dissociation cross sections for the methyl losses and/or weak Te-CH3, Se-CH3, S-CH3, and I-CH3 bonds. These spectra are consistent with Te therefore Te, Te therefore Se, Te therefore S, and Te therefore I hypervalent interactions. Equilibrium experiments on (CH3)(2)Te.+ + Te(CH3)(2) + M reversible arrow [(CH3)(2)TethereforeTe(CH3)(2)](+) + M resulted in DeltaH(rxn)degrees = -97 +/- 2 kJ/mol and DeltaS(rxn)degrees = -81 +/- 3 J/(K.mol). Since in this specific reaction, DeltaH(rxn)degrees = - DeltaH(bond)degrees, the experiment yields a bond enthalpy of 97 +/- 2 kJ/mol at 516 K. We believe that these are the first experiments on 2c-3e bonding involving tellurium and thus this article includes the first known experimental Te therefore Te bond enthalpy.