What is common for H+, D+ and T+
No of electrons
No of protons
These ions do not have electrons as in each case, the only outermost electron has been abstracted. Clearly, these ions have different activation energies as evident from their different rates of reactions under similar conditions. For instance, H2O and D2O will react with the same compound at different rates. Each of these ions has exactly one proton in the nucleus.