List of Thallium Isotopes and Thallium Applications:

Thallium-203 isotope (Tl-203 isotope, 203Tl isotope)

  • THALLIUM-203 isotope is used for Thallium-201 (Tl-201 isotope, 201Tl isotope) radionuclide (radioisotope) production (can be used in life science for healthcare and medical applications and pharmaceuticals industries);

Thallium-203 isotope is available to order from BuyIsotope.com in Thallium-203 metal (Tl) chemical form and in Thallium-203 oxide (Tl2O3) chemical form. Please contact us via request a Thallium-203 isotope quote BuyIsotope.com to order Thallium-203 isotope, to get Thallium-203 price and to buy Thallium-203 isotope.

Thallium-205 isotope (Tl-205 isotope, 205Tl isotope)

  • THALLIUM-205 isotope is used for Thallium-201 (Tl-201 isotope, 201Tl isotope) radionuclide (radioisotope) production (can be used in life science for healthcare and medical applications and pharmaceuticals industries);
  • THALLIUM-205 isotope is used for studies of thallium compounds through nuclear magnetic resonance (NMR);

Thallium-205 isotope is available to order from BuyIsotope.com in Thallium-205 metal (Tl) chemical form and in Thallium-205 oxide (Tl2O3) chemical form. Please contact us via request a Thallium-205 isotope quote BuyIsotope.com to order Thallium-205 isotope, to get Thallium-205 price and to buy Thallium-205 isotope.

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Thallium Safety Data Sheet (SDS) in metal form - Download pdf file
Download Thallium SDS in metal form

Thallium Safety Data Sheet (SDS) in oxide form - Download pdf file
Download Thallium SDS in oxide form

Properties of Thallium Isotopes:

Properties of Thallium Isotopes:THALLIUM-203THALLIUM-205
Natural Abundance (%)29.570.5
Atomic Mass (Da)202.972345204.9744275
Relative Isotopic Mass202.972345204.9744275
Neutron Number (N)122124
Atomic Number (Z)8181
Mass Number (A)203205
Nucleon Number (A)203205
Proton Number (Z)8181
Half-lifeStableStable
Spin0.50.5
Quadrupole Moment00
g-factor (g value)3.244515743.2764292
Group1313
Period66
Electron Configuration Blockpp
Melting Point (K)576.6576.6
Boiling Point (K)17461746
Specific Heat0.1280.128
Heat of Formation182.2182.2
Thermal Conductivity46.146.1
Dipole Polarizability 5050
Electron Affinity (kJ/mole)0.3770.377
Electronegativity (Pauling scale)1.621.62
Atomic Radius (pm)170170
Covalent Radius (pm)190190
VDW Radius (pm)196196
Lattice Constant3.463.46
Crystal StructureHCPHCP
Jmol color#a6544d#a6544d

Thallium Information

Pure, unreacted thallium appears silvery-white and exhibits a metallic lustre. Upon reacting with air, it begins to turn bluish-grey and looks like lead. It is very malleable, and can be cut with a knife. Thallium as 41 isotopes. There are two stable natural isotopes of thallium. Tl-204 being the most stable with a half-life of 3.78 years. Thallium sulphate was used as a rodenticide. Thallium sulphine's conductivity changes with exposure to infrared light, this gives it a use in infrared detectors. Thallium was discovered by Sir William Crookes via spectroscopy. Its name Thallium comes from the Greek word thallos, which means green twig. Thallium and its compounds are toxic and can cause cancer.

Thallium compounds are used in rat and ant poisons. Also it is used for detecting infrared radiation.

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