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Crazynut
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ÂÂ 2015-11-29, 01:51 PM #6
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https://zh.wikipedia.org/wiki/¬Á¼þ

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13-Relativity in Chemistry: The Color of Gold
http://math.ucr.edu/home/baez/physi...gold_color.html

Chemists often consider the first sub-shell of a given angular momentum to be anomalous. The 3d, filled in copper, is less shielded by the s and p subshells than you might otherwise expect. Silver, with a filled 4d behaves more like you think it should. Now when you get to gold (5d) relativistic effects become important. Compared to non-relativistic results the s and p subshells are more contracted (the so-called relativistic stabilization) while d and f are destabilized and more diffuse. So gold also behaves somewhat differently. If you were to do a solid state calculation on gold without including relativistic effects you would predict it to be silvery. Including relativistic effects you get reasonably good agreement with reality.
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