Name: Gold
Symbol: Au
Atomic Number: 79
Atomic Mass: 196.96655 amu
Melting Point: 1064.43 °C (1337.5801 °K, 1947.9741 °F)
Boiling Point: 2807.0 °C (3080.15 °K, 5084.6 °F)
Number of Protons/Electrons: 79
Number of Neutrons: 118
Crystal Structure: Cubic
Density @ 293 K: 19.32 g/cm3
Color: Gold
Atomic Structure
![[Bohr Model of Gold]](b0079.gif) |
Number of Energy Levels: 6 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 18 Sixth Energy Level: 1 |
Isotopes
| Isotope | Half Life |
| Au-194 | 1.6 days |
| Au-195 | 186.1 days |
| Au-195m | 30.5 seconds |
| Au-196 | 6.2 days |
| Au-197 | Stable |
| Au-198 | 2.7 days |
| Au-199 | 3.14 days |
Facts
Date of Discovery: circa 3000 BCDiscoverer: Unknown
Name Origin: From the Old English word geolo (yellow)
Symbol Origin: From the Latin word aurum (gold)
Uses: electronics, jewelry, coins
Obtained From: crust of the earth, copper ores
Information provided by: http://www.chemicalelements.com