Template:Infobox europium

Europium, ₆₃Eu

File:Europium.jpg
Europium
Pronunciation	/jʊˈroʊpiəm/ ​(yuu-ROH-pee-əm)
Appearance	silvery white, with a pale yellow tint; but rarely seen without oxide discoloration
Standard atomic weight Ar°(Eu)
	151.964±0.001 151.96±0.01 (abridged)
Europium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ Eu ↓ Am samarium ← europium → gadolinium
Atomic number (Z)	63
Group	f-block groups (no number)
Period	period 6
Block	f-block
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 (at 20° C)	5.246 g/cm3
when liquid (at m.p.)	5.13 g/cm3
Heat of fusion	9.21 kJ/mol
Heat of vaporization	176 kJ/mol
Molar heat capacity	27.66 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 863 957 1072 1234 1452 1796
Atomic properties
Oxidation states	common: +2, +3 0
Electronegativity	Pauling scale: 1.2
Ionization energies	1st: 547.1 kJ/mol 2nd: 1085 kJ/mol 3rd: 2404 kJ/mol
Atomic radius	empirical: 180 pm
Covalent radius	198±6 pm
Color lines in a spectral range Spectral lines of europium
Other properties
Natural occurrence	primordial
Crystal structure	​body-centered cubic (bcc) (cI2)
Lattice constant	Body-centered cubic crystal structure for europium a = 458.22 pm (at 20 °C)
Thermal expansion	26.3×10−6/K (at 20 °C)
Thermal conductivity	est. 13.9 W/(m⋅K)
Electrical resistivity	poly: 0.900 µΩ⋅m (at r.t.)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+34000.0×10−6 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	Eugène-Anatole Demarçay (1896)
First isolation	1937
Isotopes of europium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 150Eu synth 36.9 y β+ 150Sm 151Eu 47.8% 4.62×1018 y α 147Pm 152Eu synth 13.54 y β+ 152Sm β− 152Gd 153Eu 52.2% stable 154Eu synth 8.59 y β− 154Gd 155Eu synth 4.76 y β− 155Gd

Eu · Europium
Sm ← ibox Sm	iso 63 Eu  [] IB-Eu [] IBisos []	→ Gd ibox Gd
File:Symbol category class.svg cat:Eu (0) File:Symbol category class.svg cat:Eu-isotopes (0) File:Commons-logo.svg Commons File:Wikidata-logo.svg Wikidata:Q1396 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page)

child table, as reused in {IB-Eu}
Main isotopes of europium
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 150Eu synth 36.9 y β+ 150Sm 151Eu 47.8% 4.62×1018 y α 147Pm 152Eu synth 13.54 y β+ 152Sm β− 152Gd 153Eu 52.2% stable 154Eu synth 8.59 y β− 154Gd 155Eu synth 4.76 y β− 155Gd

Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt)	caption: alt:
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
most stable isotope
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: )

References

These references will appear in the article, but this list appears only on this page.