Constituent
Name
Y2O3
Official name
Yttrium oxide
Family
ionic solid
Class
alkali salt
Compound type
oxide
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0
Mole fraction
1.0
Chemical composition
Formula
$Y_2O_3$
Chemical formula
Y2O3
Elemental formula
(Y3+)2 (O2-)3
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Y^{3+}$ Yttrium cation element 2 0.4 1 constituent cation main
$O^{2-}$ Oxide anion element 3 0.6 1 constituent anion main
Chemical bonds
  Bond Number
$\cdot (\cdot) Y^{3+} \cdot O^{-}-$ 3
Class
alkali salts (06)
Type
simple alkali salts (06.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
diploidal
Crystal class symbol
m-3 (Th)
Crystal spacegroup
Ia-3
Texture
polycrystalline
Molar mass
225.809 $g/mol$
Density
5.01 $g/cm^3$
Refringence type
isotropic
Refraction index $n_{\alpha}$
1.930
Color
white
Diaphaneity
transparent to translucent
Luster
adamantine