Lanthanum Isotopes

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List of Lanthanum Isotopes and Examples of Enriched Lanthanum Applications:

Lanthanum-138 isotope (La-138 isotope, 138La isotope)

  • LANTHANUM-138 isotope is used for as a marker in isotopic dilution analysis;

Lanthanum-138 isotope is available to order from BuyIsotope.com Lanthanum-138 oxide chemical form. Please contact us via request a Lanthanum-138 isotope quote BuyIsotope.com to order Lanthanum-138 isotope to get Lanthanum-138 price to buy Lanthanum-138 isotope.

Lanthanum-139 isotope (La-139 isotope, 139La isotope)

  • LANTHANUM-139 isotope is used for Cerium-139 radionuclide (radioisotope) production (can be used in life science for healthcare and medical applications and pharmaceuticals industries);
  • LANTHANUM-139 isotope is used for research in nuclear physics;

Lanthanum-139 isotope is available to order from BuyIsotope.com Lanthanum-139 oxide chemical form. Please contact us via request a Lanthanum-139 isotope quote BuyIsotope.com to order Lanthanum-139 isotope to get Lanthanum-139 price to buy Lanthanum-139 isotope.

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Lanthanum Properties:

PropertyLANTHANUM-138LANTHANUM-139
Number of Protons138139
Abundance0.00088810.9991
Atomic Number5757
Atomic Radius187187
Atomic Mass137.9138.9
Spin53.5
Quadrupole Moment0.390.2
Electronegativity (Paulig)1.11.1
Electron Configuration Blockdd
VDW Radius (mm3)278278
Mass Uncertainty3e-052e-05
g-factor (g value)0.74270.7952
Half Life1.02e+11Stable

Lanthanum Information

(From the Greek word lanthanein, to line hidden) Silvery metallic element belonging to group 3 of the periodic table and oft considered to be one of the lanthanoids. Found in some rare-earth minerals. Twenty-five natural isotopes exist. La-139 which is stable, and La-138 which has a half-life of 10^10 to 10^15 years. The other twenty-three isotopes are radioactive. It resembles the lanthanoids chemically. Lanthanum has a low to moderate level of toxicity, and should be handled with care. Discovered in 1839 by C.G. Mosander.

It is used in the electodes of high-intensity, carbon-arc lights. Also used in the production of high-grade europium metal. Because it gives glass refractive properties, it is used in expensive camera lenses.

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