The ground state energy of hydrogen atom is –13.6eV. The energy of second excited state of He+ ion in eV is:

The ground state energy of hydrogen atom is –13.6eV. 

The energy of second excited state of He⁺ ion in eV is:$13.6\times \frac{{\mathrm{Z}}^2}{{\mathrm{n}}^2}$e.v

 Second excited state means 3 rd orbit

E = $13.6\times \frac{2^2}{3^2}$

E = -6.04 e.v