Lanthanum-138 isotope (La-138 isotope, 138La isotope)
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|Properties of La-138 Isotope:||LA-138|
|Natural Abundance (%)||0.089|
|Atomic Mass (Da)||137.907112|
|Relative Isotopic Mass||137.907112|
|Neutron Number (N)||81|
|Atomic Number (Z)||57|
|Mass Number (A)||138|
|Nucleon Number (A)||138|
|Proton Number (Z)||57|
|g-factor (g value)||0.742729|
|Electron Configuration Block||d|
|Melting Point (K)||1193|
|Boiling Point (K)||3737|
|Heat of Formation||431|
|Electron Affinity (kJ/mole)||0.557546|
|Electronegativity (Pauling scale)||1.1|
|Atomic Radius (pm)||187|
|Covalent Radius (pm)||195|
|VDW Radius (pm)||278|
Lanthanum is a silvery metallic element belonging to group 3 of the periodic table and oft considered to be one of the lanthanoids. It is found in some rare-earth minerals. 39 isotopes of lanthanum exist. There are 2 natural isotopes of lanthanum. One of them La-139 is stable and another one La-138 has a half-life of 10^10 to 10^15 years. It resembles the lanthanoids chemically. This element has a low to moderate level of toxicity, and should be handled with care. Lanthanum was discovered by C.G. Mosander in 1839.
Lanthanum is used in the electrodes of high-intensity, carbon-arc lights. Also it is used in the production of high-grade europium metal. Because this element gives glass refractive properties, it is used in expensive camera lenses.
What is La-138 isotope natural abundance?
Answer: 0.089 %
What is atomic mass for La-138 isotope?
Answer: 137.90711 Da
What is isotopic mass for La-138 isotope?
How many neutrons does La-138 isotope have?
How many protons does La-138 isotope have?
How many electrons does La-138 isotope have?
What is atomic number for La-138 isotope?
Is La-138 isotope stable?
Is La-138 isotope radioactive?