Gold
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| Chemical formula | Au |
|---|---|
| Atomic Number | 79 |
| OTP appearance | golden solid |
| Molar Mass(g/mol) | 197 |
| Density(g/cc) | 19.3 |
| Melting Point(°C) | 1064 |
| Boiling Point(°C) | 2970 |
| Coefficient of Thermal Expansion(×10-6 °C-1) | 14.2 |
| NFPA 704 |  0
2
0
|
Gold was one of the seven metals of antiquity, and has been used as currency for all of written history.
Uses
Justification Questioned
Other
- unreactive coatings
- drawn into wire
- decorative
Natural Occurrence
- Elemental gold does occur naturally.
Hazards
- Gold is generally recognized as safe, although soluble gold salts can cause harm if ingested.
Production
Gold appears in nature primarily as an element, so it is gathered or harvested, "panned" or "mined" rather than produced.
Purification
Testing
Storge
Disposal
Gold cxan be disposed of directly into the environment