Properties of Erbium

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Property	Unit	Value
Name	-	Erbium
Abbrevation	-	Er
Atomic Number	-	68
Group	-	RE
Heat of Fusion	Kcal/g-mole	4.76
Heat of Vaporization	Kcal/g-mole	63
Molecular Weight	g/g-mole	167.26000
Melting Point	�C	1529
Boiling Point	�C	2858
Refractive Index	-	N/A
Critical Temperature	�C	6976.9
Critical Pressure	atm	N/A
Critical Volume	cm�/g-mol	N/A
Atomic Volume	cm�/g-mol	18.46
Atomic Radii (Bragg-Slater)	pm	N/A
Atomic Radii (Covalent)	pm	N/A
Atomic Radii (Van der Walls)	pm	N/A
Density	g/cm�	9.06600
Oxidation State	-	3
Electron Configuration	-	[Xe]4f12 6s2
Electron Affinity (Theory)	KJ/g-mol	N/A
Electron Affinity (Exp)	KJ/g-mol	N/A
Electronegativity (Pauling)	-	1.24
Electronegativity (Sanderson)	-	0.96
Electronegativity (Allred_Rochow)	-	1.11
Surface Tension @BP	dyn/cm	N/A
NMR Frequencies of Nuclei	MHz	2.89
Discovery Date	-	1842
Electric Resistivity	mohm-cm	87
Linear Thermal Expansion Coefficient	1E-6 cm/cm/�C	9.2
Neutron Capture Cross Section	barns	0.16
Thermal Conductivity	W/m/K	14.3
Magnetic Susceptibility	1e-9 m�/kg	3330
Abundance, (Sun)	log(atoms/1E12 atoms H)	0.8
Abundance, (Meteorite)	log(atoms/atoms)	1
Abundance, (Earth)	log(pbbw)	2
Abundance, (Crust)	log(pbbw)	3.3
Abundance, (Ocean)	log(1E-12 mol/kg)	0.7
Abundance, (Body)	log(ppmw)	0
Electrical Conductivity	%IACS	N/A
Electrical Resistance	-	87
Photoelectric Work Function	eV	3.12
Hall's Coefficient	1E-12* volt-cm/amp-Oe	N/A
Electrochemical Equivalent	mg/coulomb	0.57907
Young's Modulus of Elasticity	1E-6 kg/cm�	0.748
Shear Modulus	1E-6 kg/cm�	0.302
Bulk Modulus	1E-6 kg/cm�	0.4188
Poisson's Ratio	-	0.238
Hardness	-	44
Hardness Unit	-	VICKERS, DIAMOND PYRAMID

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