Europium

Europium General

Name:Europium	Symbol:Eu
Type:Rare Earth	Atomic weight:151.96
Density @ 293 K: 5.259 g/cm3	Atomic volume:28.9 cm3/mol
Discovered: 1901

Europium States

State (s, l, g):solid
Melting point:1095 K (822 °C)	Boiling point:1802 K (1529 °C)

Europium Energies

Specific heat capacity: 0.18 J/gK	Heat of atomization:178 kJ/mole atoms
Heat of fusion:9.210 kJ/mol	Heat of vaporization :143.50 kJ/mol
1st ionization energy:546.7 kJ/mole	2nd ionization energy:1085 kJ/mole
3rd ionization energy:2405 kJ/mole	Electron affinity:50 kJ/mole

Europium Oxidation & Electrons

Shells:2,8,18,25,8,2	Electron configuration:[Xe] 4f7 6s2
Minimum oxidation number:0	Maximum oxidation number:3
Min. common oxidation no.:0	Max. common oxidation no.:3
Electronegativity (Pauling Scale): 1.12	Polarizability volume:27.7 Å3

Europium Appearance & Characteristics

Structure:bcc: body-centered cubic	Color:silvery-white
Hardness:mohs
Harmful effects:
Characteristics: hard Uses: alloys, Color TV phosphor

Europium Reactions

Reaction with air:vigorous, => Eu2O3	Reaction with 6 M HCl:mild, => H2, EuCl3
Reaction with 15 M HNO3:mild, => Eu(NO3)3	Reaction with 6 M NaOH:

Europium Compounds

Oxide(s):Eu2O3	Chloride(s):EuCl2 EuCl3
Hydride(s):EuH2

Europium Radius

Atomic radius:208 pm	Ionic radius (1+ ion):pm
Ionic radius (2+ ion):131 pm	Ionic radius (3+ ion):108.7 pm
Ionic radius (2- ion):pm	Ionic radius (1- ion):pm

Europium Conductivity

Thermal conductivity:13.9 J/m-sec-deg

Electrical conductivity:11 1/mohm-cm

Europium Abundance & Isotopes

Abundance earth's crust:0.1 log

Abundance solar system:-1.012 log

Cost, pure:$8540 per 100g

Cost, bulk:$ per 100g

Source: Monazite(phosphate),bastnaesite

Isotopes: 2

Europium Other

Other:

Prev: Samarium Next: Gadolinium