For `Be^(3+)` ion, the degeneracy of the `3rd` enegry level is equal to

1 Rd is equal to

Not considering the electronic spin, the degeneracy of the second excited state (n=3) of H atom is 9, while the degeneracy of the second excited state of H– is

Not considering the electronic spin, the degeneracy of the second excited state (n = 3) of H atom is 9, while the degeneracy of the second excited state of H^+ is

Not considering the electronic spin, the degeneracy of the second excited state (n=3) of H atom is 9, while the degeneracy of the second excited state of H^(Theta) is

The correct expression derived for the energy of an electron in the n^(th) enegry level is for H-atom :

Total different spectral lines observed in between 11th excited state and 3rd energy level in H-atom emission spectrum are: