Atomic mass, symbol and atomic number
gold is a naturally occurring element with the element symbol Au and atomic number 79. In the periodic table it stands with an atomic mass of 196,966 u in the 1st subgroup. The chemical element is not radioactive and is in a solid state at room temperature.
|Year of discovery:||primeval|
|Atomic mass:||196,966 and|
|Atomic radius:||135 pm|
|Covalent radius:||136 pm|
|Van der Waals radius:||166 pm|
|Electron configuration:||Xe 4f14 5d10 6s1|
|ionization:||890.1 kJ / mol|
|molar volume:||10,21 · 10-6 m3/ mol|
|Melting point:||1064 ° C|
|Boiling point:||2970 ° C|
|Heat of fusion:||12.55 kJ / mol|
|Heat of vaporization:||342 kJ / mol|
|Thermal conductivity:||320 W|
Did you know that ...
- theoretically gold could also be extracted from seawater, but the process would be too expensive?
- Gold have been mined by humans since the Copper Age?
- in noble restaurants the dishes are "refined" with gold leaf?
- the weight of gold is usually given in ounces? (1 ounce = approx. 31.1 g)
- China, Russia, Australia, South Africa and the US promote the most gold worldwide?
- Gold is also used in the construction of computer boards because of its conductivity?