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Atomic orbitals: 6g electron densitySchematic plot of the 6g_{xy(x2y2)} and 6g_{x4 + y4}. Blue represents negative values for the wave function and red represents positive values. The line graph on the left is a plot of values along along the x axis. The surface plot is in the xy plane, with the x direction from right to left, and the y direction from back to front. 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 3d plot changes. This plot also shows that the magnitude of the electron density for the inner lobes is high so that if we choose a high threshold value (when the bar is high), then we only see one or more of the inner lobes in the threedimensional plot. Only by moving the bar down sufficiently far does the main outer lobe become visible. All values are of necessity not negative since the square of any real number cannot be less than zero. The electron density functions for the 6g_{xy(x2y2)} and 6g_{x4 + y4} orbitals are identical in appearance and differ only in direction. One can be mapped to the other by a 22.5° rotation about the zaxis. This is best seen when viewing both together. Links to 6g electron density functions  

The Orbitron is a gallery of orbitals on the WWW The Orbitron^{TM}, a gallery of orbitals on the WWW, URL: http://winter.group.shef.ac.uk/orbitron/Copyright 20022015 Prof Mark Winter [The University of Sheffield]. All rights reserved. Document served: Tuesday 17th July, 2018 