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The electron shells in gold and the number of electrons in each one are as follows: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f14 5d10 6s1 Gold has 79 electrons in its neutral state, one for every proton in its nucleus. Because this is a lot of "work" to write out, we often "abbreviate" the electron configuration notation. We do this by writing the chemical symbol of the noble gas with an atomic number below that of the element we wish to identify, and then just "add the rest" of the electron notation above that. We call this noble gas notation or configuration. For gold, the noble gas below gold on the periodic chart is xenon (Xe). Here's the "new" notation (using xenon as an identifier) for the gold: [Xe] 4f14 5d10 6s1 Note that the three shells beyondxenon that describe gold (4f14 5d10 6s1) are identical to the last three in the "long version" of the notation. They must be, as both are expressions of the electron configuration of gold. Wikipedia has additional information of gold, and a link is provided.

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