The figure below is the plot of potential energy versus internuclear distance (𝑑) of $$H_2$$ molecule in the electronic ground state. What is the value of the net potential energy 𝐸0 (as indicated in the figure) in kJ mol$$^{−1}$$, for $$𝑑 = 𝑑_0$$ at which the electron-electron repulsion and the nucleus-nucleus repulsion energies are absent? As reference, the potential energy of H atom is taken as zero when its electron and the nucleus are infinitely far apart.
Use Avogadro constant as $$6.023 \times 10^{23}$$ mol$$^{−1}$$.