| Barium | |
| Elemental State | Ba |
| Electron Configuration | 1s22s22p63s23p63d104s24p64d105s25p66s2 |
| First Ionization Potential | 5.212 eV |
| Electron Affinity | 0.15 eV (calculated) |
| Z* | |
| Pauling Electronegativity | 0.89 |
| Covalent Radius | 1.98 Å |
| Metallic Radius | 2.24 Å |
| Ionic Radius | 1.49 Å Ba2+ coordination number
= 6
1.52 Å Ba2+ coordination number = 7 1.56 Å Ba2+ coordination number = 8 |
| van der Waal's Radius | |
| Melting Point | 727 oC |
| Boiling Point | 1897 oC |
| Density | 3.5 g/cm3 |
| Other Properties | |