The ground state energy of a hydrogen atom is $-13.6$ eV. The energy of second excited state of $\mathrm { He } ^ { + }$ ion in eV is: (1) $-27.2$ (2) $-6.04$ (3) $-3.4$ (4) $-54.4$
The ground state energy of a hydrogen atom is $-13.6$ eV. The energy of second excited state of $\mathrm { He } ^ { + }$ ion in eV is:\\
(1) $-27.2$\\
(2) $-6.04$\\
(3) $-3.4$\\
(4) $-54.4$