You can separate gold from sodium gold chloride by adding zinc
powder to the sodium gold chloride and heating the mixture. Then
you will be left with just gold.
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Most commonly it is AuCl3 for gold(III) chloride. Gold(I)
chloride would be AuCl.
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Gold and silver are elements. The symbol for gold is Au, and the
symbol for silver is Ag.
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You get a mixture of sodium chloride and gold. There will be no
chemical reaction. Gold is very unreactive.