Properties of Iridium

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Property	Unit	Value
Name	-	Iridium
Abbrevation	-	Ir
Atomic Number	-	77
Group	-	TM
Heat of Fusion	Kcal/g-mole	6.25
Heat of Vaporization	Kcal/g-mole	144.22
Molecular Weight	g/g-mole	192.22000
Melting Point	�C	2410
Boiling Point	�C	4433
Refractive Index	-	3.6
Critical Temperature	�C	N/A
Critical Pressure	atm	N/A
Critical Volume	cm�/g-mol	N/A
Atomic Volume	cm�/g-mol	N/A
Atomic Radii (Bragg-Slater)	pm	N/A
Atomic Radii (Covalent)	pm	N/A
Atomic Radii (Van der Walls)	pm	135
Density	g/cm�	22.50000
Oxidation State	-	4,2,3,6
Electron Configuration	-	[Xe]4f14 5d7 6s2
Electron Affinity (Theory)	KJ/g-mol	N/A
Electron Affinity (Exp)	KJ/g-mol	N/A
Electronegativity (Pauling)	-	2.20
Electronegativity (Sanderson)	-	1.33
Electronegativity (Allred_Rochow)	-	1.55
Surface Tension @BP	dyn/cm	2250.0
NMR Frequencies of Nuclei	MHz	1.718
Discovery Date	-	1803
Electric Resistivity	mohm-cm	5.3
Linear Thermal Expansion Coefficient	1E-6 cm/cm/�C	6.8
Neutron Capture Cross Section	barns	425
Thermal Conductivity	W/m/K	147
Magnetic Susceptibility	1e-9 m�/kg	1.67
Abundance, (Sun)	log(atoms/1E12 atoms H)	0.85
Abundance, (Meteorite)	log(atoms/atoms)	1.4
Abundance, (Earth)	log(pbbw)	2.6
Abundance, (Crust)	log(pbbw)	-1
Abundance, (Ocean)	log(1E-12 mol/kg)	0
Abundance, (Body)	log(ppmw)	0
Electrical Conductivity	%IACS	N/A
Electrical Resistance	-	4.71
Photoelectric Work Function	eV	5.4
Hall's Coefficient	1E-12* volt-cm/amp-Oe	N/A
Electrochemical Equivalent	mg/coulomb	0.50026
Young's Modulus of Elasticity	1E-6 kg/cm�	5.38
Shear Modulus	1E-6 kg/cm�	2.14
Bulk Modulus	1E-6 kg/cm�	3.62
Poisson's Ratio	-	0.26
Hardness	-	200
Hardness Unit	-	VICKERS

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