138La Isotope Applications:
Lanthanum-138 isotope (La-138 isotope, 138La isotope)
- 138La isotope is used for as a marker in isotopic dilution analysis;
138La isotope is available to order from BuyIsotope.com in 138La oxide (La2O3) chemical form. Please contact us via request a 138La quote BuyIsotope.com to order 138La isotope, to get 138La price and to buy 138La isotope.
Properties of 138La Isotope:
| Properties of 138La Isotope: | 138La |
|---|---|
| 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 |
| Half-life | 1.030E+11 |
| Spin | 5 |
| Quadrupole Moment | 0.39 |
| g-factor (g value) | 0.742729 |
| Group | 3 |
| Period | 6 |
| Electron Configuration Block | d |
| Melting Point (K) | 1193 |
| Boiling Point (K) | 3737 |
| Specific Heat | 0.197 |
| Heat of Formation | 431 |
| Thermal Conductivity | 13.4 |
| Dipole Polarizability | 215 |
| Electron Affinity (kJ/mole) | 0.557546 |
| Electronegativity (Pauling scale) | 1.1 |
| Atomic Radius (pm) | 187 |
| Covalent Radius (pm) | 195 |
| VDW Radius (pm) | 278 |
| Lattice Constant | 3.75 |
| Crystal Structure | DHCP |
| Jmol color | #70d4ff |
138La Information
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.
FAQ about 138La Isotope:
What is 138La isotope natural abundance?
Answer: 0.089 %
What is atomic mass for 138La isotope?
Answer: 137.90711 Da
What is isotopic mass for 138La isotope?
Answer: 137.90711
How many neutrons does 138La isotope have?
Answer: 81
How many protons does 138La isotope have?
Answer: 57
How many electrons does 138La isotope have?
Answer: 57
What is atomic number for 138La isotope?
Answer: 57
Is 138La isotope stable?
Answer: No
Is 138La isotope radioactive?
Answer: Yes
