Question

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

Answer 1

Ground state energy of hydrogen atom, $E=-13.6eV$
This is the total energy of a hydrogen atom.Kinetic energy is equal to the negative of total energy.
Kinetic energy$=-E=-(-13.6)=13.6eV$
Potential energy is equal to the negative of two times of kinetic energy.
Potential energy=-2×(13.6)$$=-27.2eV