Since the HOMO or LUMO orbitals of real ions represent a superposition of a number of MOs, the total contribution of such composite orbitals to the final adsorption energy or energy of binding can become more complicated. If we consider the interaction between the solvent molecules and the ions, the dependence of the binding energy on the ion energy level becomes volcano-shaped. When the p-orbitals of the ion are oriented along the z-axis (perpendicular to the MO of the solvent molecule), the left side of the volcano-shaped E bind dependence splits into two branches. In addition to the splitting, a scenario of parallel dependencies caused by the simultaneous contribution of multiple MOs of the ion is also possible. Within the NA model, the adsorption dependencies can be linear or exponential. However, if we consider the adsorption on the electrode through the effective wave function by eq. ( , 9), we can expect the same trends as those obtained in the first model by eq. (1-5), i.e. formation of volcano-like dependencies or an exponential or linear decrease/increase in the adsorption energy. as a function of the energy level ε a of the adsorbent (C) and the square of the matrix element V 2 (D). Estimation of the adsorption energy of the ions by eq. ( ) (E).