Periodic Table

Iridium

Atomic Number: 77

 
Overview
PropertyValueUnits

Atomic Mass

192.217

Density

22.65

g/cckg/m3lb/in3
Thermal Properties

Thermal Properties

PropertyValueUnits

Melting Point

2410°C

K°C°F°R

Boiling Point

4527°C

K°C°F°R

Critical Pressure

The critical pressure has not been determined for Iridium

Critical Temperature

The critical temperature has not been determined for Iridium

Heat of Fusion

26 kJ/mol

kJ/molcal/mol

Heat of Vaporization

560 kJ/mol

kJ/molcal/mol

Specific Heat

131 J/kg·K

J/kg·K

Thermal Conductivity

150 W/m·K

W/m·K
Electon Configuration

Electron Structure

[Xe] 4f14 5d7 6s2

Shell Arrangement

KLMNOPQ
2818321520
LevelS OrbitalP OrbitalD OrbitalF Orbital
Level 1
Level 2
History

Year Discovered

1803

Isotopes
IsotopeCommon NameSymbolMassStatusAbundanceHalf-lifeDecay modeDecay EnergyNuclear SpinMagnetic Moment

77

Ir

191

IridiumIr191Stable37.3-----

77

Ir

193

IridiumIr193Stable62.7-----

Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.

Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.

 

Occurance
In the Universe0.0000002%
In the Sun0.0000002%
In Meteorites0.000054%
In the Earth's Crust0.00000004%
In Seawater0%
In the Human Body0%
Models

Pictures, videos and 3D models of the element

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