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Tm - Thulium (69/168.934)
Material List
Tm
(15)
Tm2O3
(2)
TmB12
(2)
TmS
(2)
4
material,
21
document(s) are retrieved.
Naturally occurring isotopes:
169
Density:
9.321 (298.15K)
g/cm
3
Melting point:
1545 ± 15
o
C
Boiling point:
1727
o
C
Latent heat of fusion:
109
J/g
Specific heat:
0.16
J/g/K (at room temp.)
Coefficient of lineal thermal expansion:
1.16E-05
cm/cm/K (at room temp.)
Thermal conductivity:
1.69E-01
W/cm/K (at room temp.)
Electrical resistivity:
7.90E-05
hm-cm (at room temp.)
lonization potential (1st):
6.1844
eV
Electronic work function Φ:
Oxidation potentials:
Tm → Tm
3+
+ 3e = 2.278
V
Chemical valence:
2 3
Electrochemical equivalents:
2.101
g/amp-hr
lonic radius:
0.869 (Tm3+)
angstrom
Valence electron potential:
49.7
-eV
Principal quantum number:
6
Principal electron shells:
K L M N O P
Electronic configuration:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f13 5s2 5p6 6s2
Valence electrons:
4f13 6s2
Crystal form:
HCP
Half life:
Cross section σ:
115 ± 15
barns
Vapor pressure:
4.90E-03
Pa (at melting point)
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