The kinetic energy of an electron in the ground state of hydrogen atom is 13.6 eV. The potential energy (P.E) and total energy (E) of electron in this state is:

$P.E=-13.6 eV, E=-27.2 eV$

The correct answer is Option (2) → $P.E=-13.6 eV, E=-27.2 eV$

P.E. is negative because the electron is bound to the nucleus,

$PE = -13.6eV$

Total energy (E) = K.E. + P.E.

$=-13.6+(-13.6)=-27.2eV$