Template:Infobox europium

Europium, ₆₃Eu
	Template:Infobox element/symbol-to-top-image-caption
General properties
Pronunciation	Template:Infobox element/pronunciation
Appearance	silvery white, with a pale yellow tint; but rarely seen without oxide discoloration
Standard atomic weight (Ar, standard)	Template:Infobox element/standard atomic weight
Mass number	Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Europium in the periodic table
	Template:Infobox element/periodic table
Atomic number (Z)	63
Group	Template:Infobox element/group
Period	period 6
Block	f-block
Element category	Template:Infobox element/category format
Electron configuration	[Xe] 4f7 6s2
Electrons per shell	2, 8, 18, 25, 8, 2
Physical properties
Phase at STP	solid
Melting point	1099 K (826 °C, 1519 °F)
Boiling point	1802 K (1529 °C, 2784 °F)
Density (near r.t.)	5.264 g/cm3
when liquid (at m.p.)	5.13 g/cm3
Heat of fusion	9.21 kJ/mol
[[Enthalpy of vaporization\|Heat of Template:Engvar]]	176 kJ/mol
Molar heat capacity	27.66 J/(mol·K)
	[[Vapor pressure\|Template:Engvar pressure]] Template:Infobox element/vapor pressure table
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state
Electronegativity	Pauling scale: 1.2
[[Ionization energy\|Template:Engvar energies]]	1st: 547.1 kJ/mol ; 2nd: 1085 kJ/mol ; 3rd: 2404 kJ/mol ; ;
Atomic radius	empirical: 180 pm
Covalent radius	198±6 pm
	Template:Infobox element/spectral lines
Other properties
Crystal structure	Template:Infobox element/crystal structure Template:Infobox element/crystal structure
Thermal expansion	poly: 35.0 µm/(m·K) (at r.t.)
Thermal conductivity	est. 13.9 W/(m·K)
Electrical resistivity	poly: 0.900 µΩ·m (at r.t.)
Magnetic ordering	paramagnetic
Magnetic susceptibility	+34,000.0·10−6 cm3/mol
Young's modulus	18.2 GPa
Shear modulus	7.9 GPa
Bulk modulus	8.3 GPa
Poisson ratio	0.152
Vickers hardness	165–200 MPa
CAS Number	7440-53-1
History
Naming	after Europe
Discovery and first isolation	Eugène-Anatole Demarçay (1896, 1901)
Main isotopes of europium
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Template:Infobox element/element navigation Template:Template reference list Expression error: Unrecognized word "template".

↑ Template:Greenwood&Earnshaw
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

[1] Template:Greenwood&Earnshaw

[magnet-2] Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.

[3] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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