The ground state energy of hydrogen atom is -13.6 eV . Consider an electronic state $\Psi$ of $\mathrm{He}^{+}$whose energy, azimuthal quantum number and magnetic quantum number are $-3.4 \mathrm{eV}, 2$ and 0 respectively. Which of the following statement(s) is(are) true for the state $\Psi$ ?
Select ALL correct options:
A
It has 2 angular nodes
B
It has 3 radial nodes
C
It is a 4d state
D
The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge.
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