Erbium
Atomic number:
68
Atomic weight:
167.26
Shells:
2,8,18,30,8,2
Orbitals:
[Xe] 4f12 6s2
Melting point:
1529°C
Boiling point:
2868°C
Covalent radius:
1.57
Å
Atomic volume:
18.4
cm³/mol
Atomic radius:
2.45
Å
Ionic radius:
1.00 (+3)
Å
Electronegativity:
1.24
Oxidation states:
1st ionization pot.:
6.1078
V
2nd ionization pot.:
11.929
V
3rd ionization pot.:
22.739
V
Specific heat:
0.17
J/gK
Heat of fusion:
19.90
kJ/mol
Heat of vapor.:
261.0
kJ/mol
Thermal conduct.:
0.143
W/cmK
Electrical conduct.:
0.0117
10^6/cm ohm
Density:
9.05
g/cm³
Valence:
3
