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Atomic orbitals: 7f electron density
This page addresses the 7fxyz, 7fx(z2-y2), 7fy(z2-x2), and 7fz(x2-y2) electron density functions. See below for links to images of the electron densities of the other 7f orbitals.
Schematic plot of the 7fxyz electron density function ψ7fxyz. Blue represents negative values for the wave function and red represents positive values. Each of the eight lobes is identical as regards shape but each is orientated in a different direction.
The line graph on the left is a plot of values along along the x = y = z line. The surface plot is on the x = y plane, so the line plot is along the diagonal from bottom left to top right of the surface plot.
The "surface" of the orbital represents points for which the electron density for that orbital is the same - an isosurface. By choosing different values of electron density, denoted by the bar moving up and down on the line plot or by the moving plane on the surface plot, then the size of the three-dimensional plot changes.
All values are of necessity not negative since the square of any real number cannot be less than zero.
The 7fxyz, 7fx(z2-y2), 7fy(z2-x2), and 7fz(x2-y2) are identical in appearance and differ only is direction. The 7fx(z2-y2), 7fy(z2-x2), and 7fz(x2-y2) orbitals can be generated from the 7fxyz orbital by 45° rotations about the x-, y-, and z-axes respectively. This is best seen when viewing all four together.
Links to 7f electron density functions
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: Wednesday 26th September, 2018