General Information
| Symbol: | Ba |
| Atomic Number: | 56 |
| Atomic Weight: (Atomic Mass, Molar Mass) | 137.327 |
| Group: | 2 (alkaline earth metals or beryllium family) |
| IIA (Old IUPAC), IIA (CAS) |
| Period: | 6 |
| Block: | s |
Physical Properties
| Density: | 3.5 g/cm3 |
| Atomic Volume: | 39.0 cm2/mole |
| Atomic Radius: | 2.22 angstroms |
| Covalent Radius: | 198 pm |
| Radioactive: | No |
States
| Melting Point: | 725.0 °C |
| Boiling Point: | 1640.0 °C |
| Heat Of Fusion: | 8.01 kJ/mole |
| Heat Of Vaporization: | 140.2 kJ/mole |
Energy
| Electronegativity: | 0.9 (Pauling Scale) |
| Electron Affinity: | -46 kJ/mol |
| 1st Ionization Energy: | 508 kJ/mol |
| Specific Heat Capacity: | 0.204 J g−1 K−1 |
| Thermal Conductivity: | 18.4 W·m−1·K−1 |
Electrons & Oxidation
| Oxidation States: | 2 |
| Electrons Per Shell: | 2 8 18 18 8 2 |
| Electron Configuration: | [Xe] 6s2 |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2 |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2 |
History
| Discovered In: | 1808 |
| Discovered By: | Sir Humphrey Davy |
| Discovered At: | England |
| Word Origin: | From the Greek word "barys" meaning "heavy" |
Translations
| English | Barium |
| Deutsch | Barium |
| Lëtzebuergesch | Barium |
| Nederlands | Barium |
| Afrikaans | Barium |
| Frysk | Barium |
| Dansk | Barium |
| Svenska | Barium |
| Norsk | Barium |
| Íslenska | Barín |
| Føroysk | Barium |
| Latin | Barium |
| Français | Baryum |
| Español | Bario |
| Catalana | Bari |
| Occitana | Bari |
| Português | Bário |
| Galego | Bario |
| Italiano | Bario |
| Furlan | Bari |
| Român | Bariu |
| Moldavian | Bariu |
| Armãneashte | Bariumu |
| Русский | Барий |
| Українска | Барій |
| by | Барый |
| Polska | Bar |
| Kaszëbsczi | Bar |
| Čech | Baryum |
| Slovenský | Bárium |
| Slovenščina | Barij |
| Hrvatska | Barij |
| Српски | Бариjум |
| Bosnian | Barij |
| Македонски | Бариум |
| Български | Барий |
| Lietuviškai | Baris |
| Lao | Bārijs |
| Sudovian | Barijan |
| Cymraeg | Bariwm |
| Gaeilge na hÉireann | Bairiam |
| Gàidhlig na h | Bairiam |
| Gaelg Vanninagh | Baarium |
| Cornish | Baryum |
| Brezhoneg | Bariom |
| Ελληνική | Βαριο |
| Shqip | Barium |
| Ossetian | Барий |
| Euskera | Barioa |
| Georgian | ბარიუმი |
| Suomi | Barium |
| Eesti | Baarium |
| Magyar | Bárium |
| Türkçe | Baryum |
| Kazakh | Барий |
| Uzbek | Барий |
| Tajik | Bari' |
| Mongolian | Бари |
| 日本語 | バリウム [bariumu] |
| 中国话 | 鋇 |
| ไทย | แบเรียม |
| Vietnamese | Bari |
| Bahasa Melayu | Barium |
| العربيه | باريوم |
| Il-Malti | Barjum |
| עברית | בריום |
| Esperanto | Bario |
Links
Misspellings: varium, narium, harium, garium, bzrium, bsrium, bwrium, bqrium, baeium, badium, bafium, batium, ba5ium, ba4ium, baruum, barjum, barkum, baroum, bar9um, bar8um, bariym, barihm, barijm, bariim, bari8m, bari7m, bariun, bariuk, bariuj, arium, brium, baium, barum, barim, bariu, abrium, braium, bairum, baruim, barimu, bbarium, baarium, barrium, bariium, bariuum, bariumm
