This element has the highest value for electron affinity, and an acid made up of the anion of this element mixes with nitric acid to form aqua regia.
In the Miller process, this element is used to purify a mixture of gold. This element forms at the anode in the Castner-Kellner process, and it was originally produced by the Deacon process. This element has the highest value for electron affinity, and an acid made up of the anion of this element mixes with nitric acid to form aqua regia. Compounds made up of this element with carbon and fluorine have been shown to cause destruction of the ozone layer, and this element is used to kill bacteria in swimming pools. For 10 points, name this element whose anion combines with sodium to make table salt.
In the Miller process, this element is used to purify a mixture of gold.
Chlorine