Solid phase
Official name
Synthetic Chromium
CAS number
7440-47-3
Family
metallic solid
Class
true metal
Compound type
metal
Formula
$Cr$
Chemical formula
Cr
Elemental formula
Cr
Isotope mixture type
terrestrial abundance
2.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Cr$ Chromium element 1 1.0 1 pure main
Class
true metals (13)
Type
homovalent monolayer metals (13.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Im-3m
Molar mass
51.996 $g/mol$
Density
7.19 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 2180 K ​(1907 °C)
Refringence type
isotropic
Pure color
white
Color
white, silvery
Diaphaneity
opaque
Luster
metallic