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User:Femto/Elementbox legend and prototype

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79 platinumgoldmercury
Ag

Au

Rg
General
Name, Symbol, Number gold, Au, 79
Chemical series transition metals
Group, Period, Block 11, 6, d
Appearance metallic yellow
CAS registry number 7440-57-5
Atomic properties
Atomic mass 196.96655(2) g/mol
Electron configuration [Xe] 4f14 5d10 6s1
Electrons per shell 2, 8, 18, 32, 18, 1
Crystal structure cubic face centered
Oxidation states 3, 1 (amphoteric)
Electronegativity 2.54 (Pauling scale)
Atomic radius 135 pm
Atomic radius (calc.) 174 pm
Covalent radius 144 pm
Van der Waals radius 166 pm
Physical properties
Phase solid
Density (near r.t.) 19.3 g/cm³
Liquid density at m.p. 17.31 g/cm³
Melting point 1337.33 K
(1064.18 °C, 1947.52 °F)
Boiling point 3129 K
(2856 °C, 5173 °F)
Heat of fusion 12.55 kJ/mol
Heat of vaporization 324 kJ/mol
Heat capacity (25 °C) 25.418 J/(mol·K)
Thermal conductivity (300 K) 318 W/(m·K)
Vapor pressure
P/Pa 1 10 100 1 k 10 k 100 k
at T/K 1646 1814 2021 2281 2620 3078
Material properties
Young's modulus 78 GPa
Bulk modulus 220 GPa
Shear modulus 27 GPa
Poisson ratio 0.44
Mohs hardness 2.5
Vickers hardness 216 MPa
Brinell hardness 2450 MPa
Thermal expansion (25 °C) 14.2 µm/(m·K)
Speed of sound (thin rod) (r.t.) (hard-drawn)
2030 m/s
Magnetic ordering diamagnetic
Electrical resistivity (20 °C) 22.14 nΩm
Miscellaneous
Ionization energies 1st: 890.1 kJ/mol
2nd: 1980 kJ/mol
Notable isotopes
Main article: Isotopes of gold
iso NA half-life DM DE (MeV) DP
195Au syn 186.10 d ε 0.227 195Pt
196Au syn 6.183 d ε 1.506 196Pt
196Au syn 6.183 d β 0.686 196Hg
197Au 100 % Au is stable with 118 neutrons
198Au syn 2.69517 d β- 1.372 198Hg
199Au syn 3.169 d β- 0.453 199Hg
References

(*) links to the currently used userpage templates

  • {{Elementbox_header}} (*) opens the table; generates TableImage link and navigational stuff; first heading "General"; name, symbol, number