The ground state energy of hydrogen atom is –13.6 eV. Consider an electronic state ψ 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 ψ?
(A) It is a 4d state
(B) The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge
(C) It has 2 angular nodes
(D) It has 3 radial nodes
