Thulium
Symbol:
Tm
Atomic Number: 69
Atomic Weight: 168.9342
Boiling Point: 2223 K
Melting Point: 1818 K
Density at 300 K: 9.32 g/cm
3
Covalent radius: 1.56
Atomic radius: 2.42
Atomic
volume: 18.1 cm
3/mol
First
ionization potental: 6.184 V
Specific heat capacity: 0.16 J g
-1 K
-1
Thermal conductivity: 16.8 W m
-1 K
-1
Electrical conductivity: 1.3*10
6 Ω
-1 m
-1
Heat of fusion: 16.8 kJ/mol
Heat of vaporization: 191 kJ/mol
Electronegativity: 1.25 (Pauling's)