| Element (Atom) Name | Barium |
| Symbol | Ba |
| Physical state at room temperature | Solid |
| Element Classification | Metal |
| Group Name | Alkaline Earth Metal |
| Period Number (Periodic table) | 6 |
| Group number (Periodic table) | 2 |
| Atomic number | 56 |
| Atomic weight | 137.327 (Ref: Jlab-ele056, Ciaaw-barium, Nist-56) 137.3 (Ref: Lanl-56) |
| Atomic Radius | 268 pm (Van der Waals) (Ref: Lanl-56) |
| Density | 3.62 g/cm3 (Ref: Jlab-ele056) |
| Melting point | 727°C (Ref: Jlab-ele056, Lanl-56) |
| Boiling point | 1897°C (Ref: Jlab-ele056) 1845 °C (Ref: Lanl-56) |
| Electron shell configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2 |
| Oxidation States | +2 (Ref: Jlab-ele056) +2, +1 (a strongly basic oxide) (REF: Lanl-56) |
| Ionization Energy | 5.212 eV (Ref: Jlab-ele056) 5.2116646 eV (Ref: Nist-56) |
| Number of Stable Isotopes | 6 |
| InChI | 1S/Ba (Pubchem-56) |
| InChI Key | DSAJWYNOEDNPEQ-UHFFFAOYSA-N (Pubchem-56) |
REFERENCES
- Jlab-ele056: https://education.jlab.org/itselemental/ele056.html
- Lanl-56: https://periodic.lanl.gov/56.shtml
- Ciaaw-barium: https://www.ciaaw.org/barium.htm
- Nist-56 : https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=56
- Pubchem-56: https://pubchem.ncbi.nlm.nih.gov/element/56
- science.co.il: https://www.science.co.il/elements/
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