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Atomic orbitals: 1s

The shape of the 1s orbital.

For any atom there is just one 1s orbital. Consider the shape on the left. The surface of the shape represents points for which the electron density for that orbital is the same - an isosurface. The image shows clearly the spherical shape of the 1s function.

The orbital on the right is sliced in half to show that there is no spherical node in the 1s orbital. Examine the electron density plots to see that the electron density increases exponentially towards the nucleus.

While still spherical, the higher s-orbitals (2s, 3s, 4s, 5s, 6s, and 7s) are more complex since they have spherical nodes.

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The Orbitron is a gallery of orbitals on the WWW

The OrbitronTM, a gallery of orbitals on the WWW, URL: http://winter.group.shef.ac.uk/orbitron/
Copyright 2002-2014 Mark Winter [The University of Sheffield]. All rights reserved.
Document served: Friday 25th July, 2014