Precious Metal Elements
Gold［ Atomic number79 Atomic weight196.966569 ］
In addition to being used for jewelry, this multitalented element is used for ultrafine wires in mobiles and smartphones, playing a hugely important role when conducting electricity.
My buddy Platinum thinks he’s great, but I’m better! Famous people throughout the ages have loved me. I’m also used to protect the surface of different things. Without me, there would be no industrial products.
| Au | Gold | |
|---|---|---|
| Atomic number | 79 | |
| Atomic weight | 196.966569 | |
| Isotope | 197Au | |
| Crystal Structure | fcc | |
| Metallicity | Trans.Metal | |
| Shell | 2,8,18,32,18,1 | |
| Filling Orbital | 5d10 | |
| Oxidation States | 3,1 | |
| Atomic Radius | Å | 1.44 |
| Covalent Radius | Å | 1.34 |
| Atomic Volume | cm3/mol | 10.2 |
| Density at 293K | g/cm3 | 19.32 |
| Melting Point | ℃ | 1064.18 |
| Boiling Point | ℃ | 2857 |
| Specific Heat | J/gK | 0.128 |
| Heat of Fusion | kJ/mol | 12.55 |
| Heat of Vaporization | kJ/mol | 334.40 |
| Thermal Conductivity at 273K | W/mK | 319 |
| Specific Resistance at 273K | 10-6 Ωcm | 2.05 |
| Coefficient of Linear expansion at 293K | 10-6 K-1 | 14.2 |
| Ionization Potential | V | 9.22553 |
| 2nd Ionization Potential | V | 20.20 |
| Electron Affinity | eV | 2.30863 |
| Electronegativity | 2.4 | |
| Discovery | year | Ancient |