| Element (Atom) Name | Lanthanum |
| Symbol | La |
| Physical state at room temperature | Solid |
| Element Classification | Metal |
| Group Name | Lanthanide |
| Period Number (Periodic table) | 6 |
| Group number (Periodic table) | None |
| Atomic number | 57 |
| Atomic weight | 138.90547 (Ref: Jlab-ele057, ciaaw-lanthanum, Nist-57) 138.9 (Ref: Lanl-57) |
| Atomic Radius | 240 pm (Van der Waals) (Ref: Lanl-57) |
| Density | 6.15 g/cm3. (Ref: Jlab-ele057) |
| Melting point | 918°C (Ref: Jlab-ele057) 920 °C (Ref: Lanl-57) |
| Boiling point | 3464°C (Ref: Jlab-ele057, Lanl-57) |
| Electron shell configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 5d1 6s2 |
| Oxidation States | +3 (Ref: Jlab-ele057) 3, 2, 1 (a strongly basic oxide) (Ref: Lanl-57) |
| Ionization Energy | 5.577 eV (Ref: Jlab-ele057) 5.5769 eV (Ref: Nist-57) |
| Number of Stable Isotopes | 1 |
| InChI | InChI=1S/La (Ref: Pubchem-57) |
| InChI Key | FZLIPJUXYLNCLC-UHFFFAOYSA-N (Ref: Pubchem-57) |
| Remarks |
REFERENCES
- Jlab-ele057: https://education.jlab.org/itselemental/ele057.html
- Lanl-57: https://periodic.lanl.gov/57.shtml
- ciaaw-lanthanum : https://www.ciaaw.org/lanthanum.htm
- Nist-57: https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=57
- Pubchem-57: https://pubchem.ncbi.nlm.nih.gov/element/57
- science.co.il: https://www.science.co.il/elements/
Was this post helpful?
Let us know if you liked the post. That’s the only way we can improve.
1 thought on “Element: Lanthanum (La)”