Solid phase
Official name
Iridium
CAS number
7439-88-5
Family
metallic solid
Class
true metal
Compound type
metal
Formula
Ir
Chemical formula
Ir
Elemental formula
Ir
Isotope mixture type
terrestrial abundance
2.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
Ir Iridium element 1 1.0 1 constituent element 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
Fm-3m
Molar mass
192.217 g/mol
Density
22.562 g/cm3
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid Ir 2719 K ​(2446°C)
Refringence type
isotropic
Pure color
gray
Color
silvery-white, gray
Diaphaneity
opaque
Luster
metallic