Europium
Atomic number:
63
Atomic weight:
151.965
Shells:
2,8,18,25,8,2
Orbitals:
[Xe] 4f7 6s2
Melting point:
822°C
Boiling point:
1527°C
Covalent radius:
1.85
Å
Atomic volume:
28.9
cm³/mol
Atomic radius:
2.56
Å
Ionic radius:
1.07 (+3)
Å
Electronegativity:
1.2
Oxidation states:
(3),2
1st ionization pot.:
5.6704
V
2nd ionization pot.:
11.245
V
3rd ionization pot.:
24.926
V
Specific heat:
0.18
J/gK
Heat of fusion:
9.210
kJ/mol
Heat of vapor.:
143.50
kJ/mol
Thermal conduct.:
0.139
W/cmK
Electrical conduct.:
0.0112
10^6/cm ohm
Density:
5.259
g/cm³
Valence:
2,3
