1) " Gold" -- As it applies to Gold Platinum For other uses, see Gold(disambiguation). platinum – gold – mercury Ag Au Rg Fulltable General Name, Symbol, Number Gold, Au, 79 Chemical series transition metals Group, Period, Block 11 (IB), 6, d Density, Hardness 19300 kg/m 3, 2.5 Appearance Metallic yellow Atomic properties Atomic weight 196.96655 amu Atomic radius (calc.) 135 (174) pm Covalent radius 144 pm van der Waals radius 166 pm Electron configuration [ Xe ] 4 f 14 5d 10 6 s 1 e - 's per energylevel 2, 8, 18, 32, 18, 1 Oxidation states ( Oxide ) 3, 1 ( amphoteric ) Crystal structure Cubic face centered Physical properties State of matter Solid Melting point 1337.33 K (1947.52 ° F ) Boiling point 3129 K (5173 °F) Molar volume 10.21 × 10 -6 m 3 /mol Heat of vaporization 334.4 kJ/mol Heat of fusion 12.55 kJ/mol Vapor pressure 0.000237 Pa at 1337 K Speed of sound 1740 m/s at 293.15 K Miscellaneous Electronegativity 2.54 ( Pauling scale ) Specific heat capacity 128 J/(kg*K) Electrical conductivity 45.2 10 6 /m ohm Thermal conductivity 317 W/(m*K) 1 st ionization potential 890.1 kJ/mol 2 nd ionization potential 1980 kJ/mol Most stable isotopes iso NA Longest t ½ is 186.09 d (Au-195) 197 Au 100% Au is stable with 118 neutrons SI units & STP are used except wherenoted. Gold is a chemical element in the periodic table that has the symbol Au ( L. aurum ) and atomic number 79.A soft, shiny, yellow, heavy, malleable, ductile (trivalent and univalent) transition metal, gold does not react with most chemicals but is attacked by chlorine, fluorine and aqua regia. The metal occurs as nugget...
2) " Platinum" -- As it applies to Gold Platinum Platinum is also a certification by the RIAA and other world recording industries, see: RIAAcertification Iridium - Platinum - Gold Pd Pt Ds Fulltable General Name, Symbol, Number Platinum, Pt, 78 Chemical series transition metals Group, Period, Block 10, 6, d Density, Hardness 21450 kg/m³, 3.5 Appearance grayish white Atomic properties Atomic weight 195.078 amu Atomic radius (calc.) 135 (177) pm Covalent radius 128 pm van der Waals radius 175 pm Electron configuration [ Xe ]4 f 14 5d 9 6 s ¹ e - 's per energylevel 2, 8, 18, 32, 17, 1 Oxidation states ( Oxide ) 2, 4 (mildly basic ) Crystal structure Cubic face centered Physical properties State of matter solid ( paramagnetic ) Melting point 2041.4 K (3214.9 ° F ) Boiling point 4098 K (6917 °F) Molar volume 9.09 × 10 -6 m³/mol Heat of vaporization 510 kJ/mol Heat of fusion 19.6 kJ/mol Vapor pressure 0.0312 Pa at 2045 K Speed of sound 2680 m/s at 293.15 K Miscellaneous Electronegativity 2.28 ( Pauling scale ) Specific heat capacity 130 J/(kg·K) Electrical conductivity 09.66 10 6 /(m· ohm ) Thermal conductivity 71.6 W/(m·K) 1 st ionization potential 870 kJ/mol 2 nd ionization potential 1791 kJ/mol Most stable isotopes iso NA half-life DM DE M eV DP 190 Pt 0.01% 6.5 E11 y α 3.249 186 Os 192 Pt 0.79% Pt is stable with 114 neutrons 193 Pt {syn.} 50 y ε 0.057 193 Ir 194 Pt 32.9% Pt is stable with 116 neutrons 195 Pt 33.8% Pt is stable with 117 neutrons 196 Pt 25.3% Pt is stable with 118 neutrons 198 Pt 7.2% Pt is stable with 120 neutrons SI units & STP are used except wherenoted. Pl...
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