Gold - Periodic Table of the Elements

FACULTY OF CHEMICAL TECHNOLOGY IN SPLIT
PERIODIC TABLE OF THE ELEMENTS version 1.7


 Au

English:  Gold
French: Or
Croatian: Zlato
German: Gold
Italian: Oro


Atomic number: 79
Group numbers: 11
Period: 6
Standard state (20 °C): solid

Gold has been known since ancient times. The origin of the name comes from the Latin word aurum meaning gold. It is soft, malleable, bright yellow metal. Unaffected by air, water, alkalis and most acids.

Electronic configuration: [Xe] 4f¹⁴² 5d¹⁰ 6s¹
Relative atomic mass: 196.96655(2)
Formal oxidation number: +1 +3

Electronegativities: 2.4
Thermal conductivity: 317 W/(m K)
Electrical resistivity (20 °C): 2.35 μΩcm

Atomic radius: 144.2 pm
Density (g/dm3): 19320 (293 K) 
17280 (m.p.)
Molar volume (cm3/mol): 10.19 (293 K) 
11.11 (m.p.)

Melting point: 1064.18 °C
Boiling point: 2856 °C
Critical temperature: 9227 °C

Heat of fusion: 12.7 kJ/mol
Heat of vaporization: 343.1 kJ/mol
Heat of atomization: 365.93 kJ/mol

Gold is found in veins in the crust, with copper ore and native. Used in electronics,jewellery and coins. It is a good reflector of infrared radiation, so a thin film of gold is applied to the glass of skyscrapers to reduce internal heating from sunlight. The price of 99.99 % pure gold grain is 1652.50 € for 25 g. 78Pt <= 79Au => 80Hg ___________________ If you have comments, corrections or suggestions about this site, please send me a e-mail. Periodic Table of the Elements __________________________________ Last modified: 29.03.2003 Copyright © 1998-2003 by Eni Generalic