| name | Barium |
| latin | Baryum |
| french | Baryum |
| german | Barium |
| symbol | Ba |
| proton number | 56 |
| atomic weight | 137.327 |
| Pauling electronegativity | 0.89 |
| electronic configuration | [Xe] 6s2 1s22s22p63s23p63d104s24p64d105s25p66s2 |
| melting point | 1000 K, 727°C, 1340°F |
| boiling point | 2143 K, 1870°C, 3398°F |
| group | 2 |
| period | 6 |
| state (by 20°C) | solid |
| oxidation states | +2 |
| Year of discovery | Discoverer |
| 1808 | Sir Humphry Davy (1778-1829) |