Symbol:
Eu
Atomic Number:
63
Atomic Weight:
151.965
Element Classification:
Discovered By:
Eugene-Antole Demarcay
Discovery Date:
1901 (France)
Name Origin:
Named for the continent of Europe.
Density (g/cc):
5.243
Melting Point (K):
1095
Boiling Point (K):
1870
Appearance:
Soft, silvery-white metal
Atomic Radius (pm):
199
Atomic Volume (cc/mol):
28.9
Covalent Radius (pm):
185
Ionic Radius:
95 (+3e) 109 (+2e)
Specific Heat:
0.176
Fusion Heat (kJ/mol):
n/a
Evaporation Heat (kJ/mol):
176
Thermal Conductivity (@25°C W/m K):
13.9
Debye Temperature (K):
n/a
Pauling Negativity Number:
0.0
First Ionizing Energy (kJ/mol):
546.9
Oxidation States:
3, 2
Electronic Configuration:
[Xe] 4f7 6s2
Lattice Structure:
Body-Centered Cubic(BCC)
Lattice Constant:
4.610
Lattice C/A Ratio:
n/a
