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.