7i radial distribution function

Schematic plot of the 7i radial distribution function r²R_7i² (R_7i = radial wave function).

For 7i-orbitals, the radial distribution function is related to the product obtained by multiplying the square of the radial wave function R_7i by r². By definition, it is independent of direction.

In addition to planar and conical nodes, i-orbitals (n > 7) display a number of radial nodes that separate the largest, outer, component from the inner components. The number of nodes is related to the principal quantum number, n. In general, the ni orbital has (n - 7) radial nodes, so the 7ih-orbitals have (7 - 7) = 0 radial nodes, as shown in the above plot. Radial nodes are evident, however, in the higher i-orbitals (8i, 9i, ...).