| Gold |
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79Au |
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| Panagway |
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metallic yellow
 |
| Kinatibuk-ang mga kinaiya |
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| Ngalan,simbolo,kaiphan | gold, Au, 79 |
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| Paglitok | /ˈɡoʊld/ |
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| Kategoriyang elemento | puthaw nga transisyon |
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| Group,period,block | 11, 6,d |
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| Gibug-aton sa atomo | 196.966569(4) |
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| Kontorno sa elektron | [Xe] 4f14 5d10 6s1
2, 8, 18, 32, 18, 1 Electron shells of gold (2, 8, 18, 32, 18, 1) |
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| History |
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| Pagkadiskobre | Middle Easterns (before6000 BC) |
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| Physical properties |
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| Phase | magahi |
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| Density (nearr.t.) | 19.30 g·cm−3 |
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| Liquiddensity atm.p. | 17.31 g·cm−3 |
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| Melting point | 1337.33 K, 1064.18 °C, 1947.52 °F |
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| Boiling point | 3129 K, 2856 °C, 5173 °F |
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| Heat of fusion | 12.55kJ·mol−1 |
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| Heat of vaporization | 324 kJ·mol−1 |
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| Molar heat capacity | 25.418 J·mol−1·K−1 |
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| Vapor pressure |
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| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k | | at T (K) | 1646 | 1814 | 2021 | 2281 | 2620 | 3078 |
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| Atomic properties |
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| Oxidation states | 5, 4,3, 2, 1, −1, −2
(amphoteric oxide) |
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| Electronegativity | 2.54 (Pauling scale) |
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| Ionization energies | 1st: 890.1 kJ·mol−1 |
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| 2nd: 1980 kJ·mol−1 |
| Atomic radius | 144pm |
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| Covalent radius | 136±6 pm |
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| Van der Waals radius | 166 pm |
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| Miscellanea |
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| Crystal structure | lattice face centered cubic |
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| Magnetic ordering | diamagnetic[1] |
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| Electrical resistivity | (20 °C) 22.14 nΩ·m |
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| Thermal conductivity | 318 W·m−1·K−1 |
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| Thermal expansion | (25 °C) 14.2 µm·m−1·K−1 |
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| Speed of sound (thin rod) | (r.t.) 2030 m·s−1 |
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| Tensile strength | 120 MPa |
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| Young's modulus | 79 GPa |
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| Shear modulus | 27 GPa |
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| Bulk modulus | 180 GPa |
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| Poisson ratio | 0.44 |
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| Mohs hardness | 2.5 |
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| Vickers hardness | 216 MPa |
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| Brinell hardness | 25 HB MPa |
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| CAS registry number | 7440-57-5 |
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| Most stable isotopes |
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| Main article:Isotopes of gold |
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| ·r |
