Thullium (Tm) Properties |
AThullium (ATm)
Properties 1/ |
Nuclear (69 protons/electrons)
- Atomic Number: 69
- Atomic Mass: 168.934
- Atomic Energy: 0.252 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.56 Angstroms
- Atomic Radius: 2.42 Angstroms
- Atomic Volume: 18.1 cm3mol-1
- 34
Isotopes: 146Tm
to 179Tm
- Stable Isotopes: 169Tm
|
Nuclear (69 Aprotons/positrons)
- Atomic Number: 69
- Atomic Mass: 168.934
- Atomic Energy: 0.252 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.56 Angstroms
- Atomic Radius: 2.42 Angstroms
- Atomic Volume: 18.1 cm3mol-1
- 34 AIsotopes: 146ATm
to 179ATm
- Stable AIsotopes: 169ATm
|
Physical
- Silver colored metal
- Density: 9.33 g cm-3
- Melting Point: 1,545 oC
- Boiling Point: 1,727 oC
- Specific Heat: 0.16 J g-1 K-1
- Heat of Vaporization: 191 kJ mol-1
- Heat of Fusion: 16.8 kJ mol-1
- Electrical Conductivity: 0.0150 106 cm-1 Ohm-1
- Thermal Conductivity: 0.168 W cm-1 K-1
|
Physical
- Silver colored metal
- Density: 9.33 g/cm-3
- Melting Point: 1,545 oC
- Boiling Point: 1,727 oC
- Specific Heat: 0.16 J g-1 K-1
- Heat of Vaporization: 191 kJ mol-1
- Heat of Fusion: 16.8 kJ mol-1
- Electrical Conductivity: 0.0150 106 cm-1 Ohm-1
- Thermal Conductivity: 0.168 W cm-1 K-1
|
Chemical
- Valance Number: +3
- Electron Configuration: 2,8,18,31,8,2
- Electronegativity: 1.25
- 1st Ionization Potential: 6.2 Volts
- 2nd Ionization Potential: 12.1 Volts
- 3rd Ionization Potential: 26.4 Volts
|
Chemical
- Valance Number: -3
- Positron Configuration: 2,8,18,31,8,2
- Positronpositivity: 1.25
- 1st Ionization Potential: 6.2 Volts
- 2nd Ionization Potential: 12.1 Volts
- 3rd Ionization Potential: 26.4 Volts
|
Identified by Per Theodor
Cleve
Sweden in 1879
|
Identified by Norm Hansen in 2001
|