Gold
Transition Metal
Gold (Au) is a chemical element with atomic number 79, classified as a transition metal. At room temperature it is a solid. It has been known since ancient times.
Properties
- Atomic number
- 79
- Atomic mass
- 196.97 u
- Category
- Transition Metal
- Group
- 11
- Period
- 6
- Block
- d-block
- Electron configuration
- [Xe] 4f¹⁴ 5d¹⁰ 6s¹
- Phase at STP
- Solid
- Density
- 19.282 g/cm³
- Melting point
- 1337.33 K (1064.2 °C)
- Boiling point
- 3129 K (2855.8 °C)
- Electronegativity
- 2.54
- Atomic radius
- 174 pm
- Ionization energy
- 9.226 eV
- Discovery
- Known since ancient times
Common uses
Jewelry, electronics, currency, medical treatments
Did you know?
Doesn't tarnish or corrode and has been valued for thousands of years.
Experiment with the elements
Gold doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.