The ground state energy of hydrogen atom is `-13.6 eV`. Consider an electronic state `Psi` of `He^(+)` whose energy, azimuthal quantum number and magnetic quantum number are `-3.4 eV, 2` and 0, respectively. Which of the following statement(s) is(are) true for the state `Psi`?

Options

A. It has 3 radial nodes
B. It has 2 angular nodes
C. The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge
D. It is a 4d state

Answer

A, C, D