Discovered By: Eugene Anatole Demarcay
Discovery year: 1901

The following table showing some properties of Europium(Eu):

Table Example
Atomic number 63
Group n/a
Period 6
Block f
Electrons 63
Protons 63
Neutrons 89
Atomic weight 151.964
Oxidation states +2, +3
Ionic charge Eu^3+, Eu^2+


Table Example
Electrons per shell K2 L8 M18 N25 O8 P2
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^7
Atomic radius 231 pm
Covalent radius 198 pm
Boiling point 1527°C
Melting point 822°C
Neel point 90.5 K
Phase Solid
Fusion heat 9.2 kJ.mol^-1
Specific heat 1823 J.kg.K^-1


Table Example
Thermal expansion 3.5*10^-5 K
Vaporization heat 175 kJ.mol^-1
Color Silver
Bulk modulus 8.3 GPa
Density 5244 kg.m^-3
Liquid density 5130 kg.m^-3
Mohs hardness 3.1
Poisson ratio 0.15
Shear modulus 7.9 GPa
Vickers hardness 167 MPa


Table Example
Young's modulus 18 GPa
Electrical conductivity 1.1*10^6 S.m^-1
Electrical type Conductor
Magnetic type Paramagnetic
Resistivity 9*10^-7 Ohm.m
Superconducting point 1.8 K
Valence 3
Electron affinity 50 kJ.mol^-1
First ionization energy 547.1 kJ.mol^-1
Radioactive No
Neutron cross section 4570 barn