| Identification | |
| Name: | Gold, ion (Au2+) |
| Synonyms: | Au2+; Goldion(2+); Gold(2+) |
| CAS: | 15456-07-2 |
| Molecular Formula: | Au |
| Molecular Weight: | 196.96655 |
| InChI: | InChI=1S/Au |
| Molecular Structure: |  |
| Properties | |
| Melting Point: | 1064.76 deg C |
| Boiling Point: | 2700 deg C |
| Solubility: | INSOL IN WATER, ACID; SOL IN POTASSIUM CYANIDE, HOT SULFURIC ACID Soluble in aqua regia, insoluble in acids Dissolves readily in 3:1 hydrochloric-nitric acid to form HAuCl4; dissolves in cyanide solutions in the presence of air or hydrogen peroxide to form Au(CN)2 |
| Color: | Soft, yellow metal Cubic, yellow, ductile, metallic crystals; forms red, blue, or violet colloidal suspensions. Yellow, ductile metal, relatively soft Yellow, soft metal, face-centered cubic structure Malleable, lustrous, yellow metal When prepared by volatilization or precipitation methods, deep violet, purple, or ruby powder |
| Safety Data | |
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