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 $$\psi$$?

A

It is a 4d state

B

It has 2 angular nodes

C

It has 3 radial nodes

D

The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge