The energy of a hydrogen atom in the ground state is 13.6 eV. The energy of He+ ion in the first excited state will be
-13.6 eV
-27.2 eV
-54.4 eV
-6.8 eV
A
-13.6 eV
B
-6.8 eV
C
-27.2 eV
D
-54.4 eV
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