The bond dissociation energy of a molecule is defined as the energy required to dissociate it. For H2 and \(H_2^{+}\) molecules, the bond dissociation energies are 4.478 eV and 2.651 eV respectively. If the equilibrium bond lengths of both H2 and \(H_2^{+}\) $are identical, the value of the ionization potential of hydrogen molecule will be closest to