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Atomic orbitals: 7d wave function
This page addresses the 7dz2 wave function. See the 7dxy, 7dxz, 7dyz, and 7dx2-y2 page for information about the other 7d wave functions.
Schematic plot of the 7dz2 wave function ψ7dz2. The blue zones are where the wave function has negative values and the red zones denote positive values.
The graph on the left is a plot of values along a single line drawn through the nucleus along the z-axis, while the surface plot on the right shows values of ψ7dxy on a slice in the xz plane drawn through the nucleus.
The plot above is for the 7dz2 orbital - see the 7dxy, 7dxz, 7dyz, and 7dx2-y2 page for comparable information about their wave functions.
In general, apart from the two nodal planes, d-orbitals have a number of radial nodes that separate the largest, outer, component from the inner components. The number of radial nodes is related to the principal quantum number, n. In general, a nd orbital has (n - 3) radial nodes, so 7d-orbitals have (6 - 3) = 3 radial nodes.
The equations for the 7d orbitals (ψ7d) show that in addition to a radial dependency, there is a dependency upon direction. This is why d orbitals are not spherical. This behaviour is unlike that of the s orbitals for which the value of the wave function for a given value of r is the same no matter what direction is chosen.
The Orbitron is a gallery of orbitals on the WWWThe OrbitronTM, a gallery of orbitals on the WWW, URL: http://winter.group.shef.ac.uk/orbitron/
Copyright 2002-2015 Prof Mark Winter [The University of Sheffield]. All rights reserved.
Document served: Tuesday 13th November, 2018