x -y d orbitals lead to two volcanoshaped dependencies (Figure ). Their side branches are close to linear dependencies and the interaction of the orbitals with the electrode is rather weak in this case. In case of the z p and 2 z d orbitals, a quickly decreasing exponential dependence is observed. For the cations involving these orbitals, the E ads dependence represents a function that decreases as the ε ion value becomes higher. In general, this result is very close to the data obtained by the first model by eq. (1-5).