MCQ
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 $\Psi$ ?
$(1)$ It has $2$ angular nodes
$(2)$ It has $3$ radial nodes
$(3)$ It is a 4d state
$(4)$ The nuclear charge experienced by the electron in this state is less than $2 e$, where $e$ is the magnitude of the electronic charge.
- ✓$1,3$
- B$1,4$
- C$1,2$
- D$1,2,3$
