Radial nodes are calculated as n - l - 1. For a 4f orbital, where n = 4 and l = 3, the number of radial nodes is:
4 - 3 - 1 = 1
The figures below show:
Which of the following points in Figure 2 most accurately represents the nodal surface shown in Figure 1?
The wavelength of spectral line obtained in the spectrum of Li$^{2+}$ ion, when the transition takes place between two levels whose sum is 4 and difference is 2, is