The difference between the radii of \(3^{\text {rd }}\) and \(4^{\text {th }}\) orbits of \(\mathrm{Li}^{2+}\) is \(\Del…

The difference between the radii of \(3^{\text {rd }}\) and \(4^{\text {th }}\) orbits of \(\mathrm{Li}^{2+}\) is \(\Delta \mathrm{R}_1\). The difference between the radii of \(3^{\text {rd }}\) and \(4^{\text {th }}\) orbits of \(\mathrm{He}^{+}\)is \(\Delta \mathrm{R}_2\). Ratio \(\Delta \mathrm{R}_1: \Delta \mathrm{R}_2\) is :

[JEE Main 2020, 5Sep (Shift 1)]