Atomic Properties
- Atomic Number
- 79
- Atomic Mass
- 196.9700 u
- Electron Configuration
- [Xe] 4f14 5d10 6s1
- Electronegativity
- 2.54
- Block
- d-block
- Group
- 11
- Period
- 6
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1337.33 K
- Boiling Point
- 3243.00 K
- Density
- 19.3000 g/cm³
About Gold
Precious metal prized since antiquity; excellent conductor; doesn't tarnish.
Why "Au" for Gold?
Au←Aurum(Latin)
The symbol Au comes from "Aurum," the Latin word for gold, possibly derived from "Aurora," the goddess of dawn, referring to gold's color. The English name "Gold" comes from Proto-Germanic "gulþą."
Isotopes of Gold
Gold has 1 naturally occurring isotope.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 197Au | 197 | 196.9665688 | 100.00% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)