Constituent Cr2O3 | SSHADE

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Constituent

Name: Cr2O3
Official name: Chromium(III) oxide

Family: covalent network solid
Class: pseudometal (semi-conductor)
Compound type: oxide

Constituent abundance in material

Relevance: main - major
Arrangement: single phase
Mass fraction: 1.0
Mole fraction: 1.0

Chemical composition

Formula: $Cr_2O_3$
Chemical formula: Cr2O3
Elemental formula: Cr2 O3
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Cr$	Chromium	element	2	0.4	1	constituent element	main
	$O$	Oxygen	element	3	0.6	1	constituent element	main

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$>Cr-O$	6

Class: pseudometals (14)
Type: homovalent bilayer pseudometals (14.02)

Phase type: crystalline

Crystallography

Crystal system: trigonal
Crystal class: ditrigonal-scalenohedral
Crystal class symbol: -3m (D3d)
Crystal spacegroup: R-3c

Texture: polycrystalline

Physical properties

Molar mass: 151.99 $g/mol$
Density: 5.22 $g/cm^3$

Optical properties

Refringence type: uniaxial
Diaphaneity: translucent to opaque
Luster: metallic