The ground state energy of a hydrogen atom is - 13.6 eV . What are the kinetic and potential energies of the electron in this state?

Ground state energy of a hydrogen atom is -13.6eV

Relation between kinetic energy (K), potential energy (U) and total energy(E) is

E= U/2 = -K

So, kinetic energy is 

K = 13.6 eV

Potential energy is

U = -27.2 eV

Kinetic energy is K = 13.6 eV

Potential energy is U = -27.2 eV