The magnitude of potential energy is double that of its kinetic energy on an average
The total energy of the electron is maximum when it is at a distance a0 from the nucleus
The electron can be found at a distance 2a0 from the nucleus
The probability density of finding the electron is maximum at the nucleus
Correct option is D. The total energy of the electron is maximum when it is at a distance a0 from the nucleus. The maximum probability of finding the electron is at a distance a0 from the nucleus and at this distance total energy of the electron is minimum.