Consider the statements. 

 (i) is that the energy of the electron in the fourth orbit of $$\text{He}^+$$ ion is less than the energy of the electron in the fourth orbit of hydrogen atom. 

(ii) is that the radius of the first orbit of $$\text{He}^+$$ ion is 0.529 $$\text{\AA}$$. 

(iii) is that in the Lyman series, as the energy liberated during the transition increases the distance between the spectral lines goes on decreasing. 

(iv) is that if the radius of the 2nd orbit of $$\text{Li}^{2+}$$ is $$x$$, the expected radius of the 3rd orbit of $$\text{Be}^{3+}$$ is $$\frac{9}{4}x$$. 

(v) is that in the hydrogen atom, 3p and 3d orbitals are not degenerate orbitals. 

The correct set of statements is