Thulium
Atomic number:
69
Atomic weight:
168.93421
Shells:
2,8,18,31,8,2
Orbitals:
[Xe] 4f13 6s2
Melting point:
1545°C
Boiling point:
1950°C
Covalent radius:
1.56
Å
Atomic volume:
2.42
cm³/mol
Atomic radius:
2.42
Å
Ionic radius:
1.09 (+3)
Å
Electronegativity:
1.25
Oxidation states:
(3),2
1st ionization pot.:
6.1843
V
2nd ionization pot.:
12.054
V
3rd ionization pot.:
26.367
V
Specific heat:
0.16
J/gK
Heat of fusion:
16.840
kJ/mol
Heat of vapor.:
191.0
kJ/mol
Thermal conduct.:
0.168
W/cmK
Electrical conduct.:
0.0150
10^6/cm ohm
Density:
9.33
g/cm³
Valence:
3
