Solid phase
Official name
Synthetic Gold
CAS number
7440-57-5
Type
Family
metallic solid
Class
true metal
Compound type
metal
Chemical composition
Formula
$Au$
Chemical formula
Au
Elemental formula
Au
Isotope mixture type
terrestrial abundance
2.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Au$ Gold element 1 1.0 1 pure main
Composition comments
100% $^{197Au}
Class
true metals (13)
Type
homovalent monolayer metals (13.01)
Equivalent mineral
Gold
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Fm-3m
Molar mass
196.966 $g/mol$
Density
19.30 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 1337.33 K ​(1064.18 °C)
Refringence type
isotropic
Refraction index $n_{\alpha}$
0.266 @ 588nm
Pure color
yellow
Color
Yellow, Pale yellow, Orange, Yellow white, Reddish white
Diaphaneity
opaque
Luster
metallic
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