The correct option is A –3.4 eV
The energy of an electron in a Bohr atom is expressed as
E=−kZ2n2
where, k = Constant,
Z = Atomic number,
n = Orbit number
= −13.6 eV for H(n=1)
when n=2 , E2=−13.622 eV=−3.40 eV
(Where n can have only integral value 1,2,3,……∞)
For higher integral values of n(n>2), the value of E will be lesser in magnitude as compared to 3.40 eV. So none of the options will match.