# Barium ## 🧊 Barium · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Ba&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Barium"></iframe> *Barium in the live three.js Elements explorer — drag to orbit the atom, click any tile to compare, slide the temperature.* · [▶ open full](https://wikitube-elements.netlify.app/?el=Ba) <!-- ELEMENTS_MICROSIM:END --> !Barium plate.svg *Plate 56 of 118 - animated Bohr shells, stylized per Madelung filling; engraving style per house Arcanity kit.* ## Microsim To Do *Claimable rows, house pattern. Real Wikipedia articles only.* - Barium sulfate - X-ray contrast medium - Barite - barium sulfate mineral ore - Alkaline earth metal - barium's chemical family - Barium ferrite - permanent magnet material ## Links (Wikipedia order) <!-- injected from _registry/childlinks/Barium.json (2026-07-30T02:09:12Z) --> [[Actinium]] · `Alkali_metal` · `Alkaline_earth_metal` · [[Aluminium]] · `Aluminothermic_reaction` · [[Americium]] · `Ammonia` · `Ammonium_chloride` · `Amoebiasis` · [[Antimony]] · `Antoine_Lavoisier` · [[Argon]] · [[Arsenic]] · [[Astatine]] · `Atomic_number` · `Atomic_radius` · `Augustus_Matthiessen` · `BaZnGa` · `Baritosis` · `Barium_acetate` · `Barium_acetylacetonate` · `Barium_azide` · `Barium_borate` · `Barium_bromate` · `Barium_bromide` · `Barium_carbide` · `Barium_carbonate` · `Barium_chlorate` · `Barium_chloride` · `Barium_chloride_fluoride` · `Barium_chromate` · `Barium_cyanide` · `Barium_ferrate` · `Barium_ferrite` · `Barium_fluoride` · `Barium_hexaboride` · `Barium_hexafluorogermanate` · `Barium_hexafluorosilicate` · `Barium_hydride` · `Barium_hydroxide` · `Barium_hypochlorite` · `Barium_iodate` · `Barium_iodide` · `Barium_manganate` · `Barium_metaphosphate` · `Barium_nitrate` · `Barium_nitrite` · `Barium_orthotitanate` · `Barium_oxalate` · `Barium_oxide` · `Barium_perchlorate` · `Barium_permanganate` · `Barium_peroxide` · `Barium_phosphate` · `Barium_ruthenate` · `Barium_selenate` · `Barium_selenide` · `Barium_stannate` · `Barium_sulfate` · `Barium_sulfide` · `Barium_sulfite` · `Barium_thiocyanate` · `Barium_titanate` · `Barium_tungstate` · `Baryon` · `Baryte` · `Benitoite` · [[Berkelium]] · [[Beryllium]] · [[Beta_decay]] · `Biological_pump` · [[Bismuth]] · `Block_(periodic_table)` · [[Bohrium]] · [[Boiling_point]] · `Bologna` · [[Boron]] · `Boron_group` · `Brin_process` · [[Bromine]] · `Bulk_modulus` · `CAS_Registry_Number` · [[Cadmium]] · [[Caesium]] · `Caesium-137` · [[Calcium]] · `California` · [[Californium]] · [[Carbon]] · 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`Speed_of_sound` · `Standard_atomic_weight` · `Standard_temperature_and_pressure` · [[Strontium]] · `Strontium_barium_niobate` · `Sulfate` · `Sulfide` · [[Sulfur]] · `Sulfuric_acid` · `Synthetic_radioisotope` · [[Tantalum]] · [[Technetium]] · [[Tellurium]] · [[Tennessine]] · [[Terbium]] · [[Thallium]] · `Thermite` · `Thomas_Lawrence` · [[Thorium]] · [[Thulium]] · `Timeline_of_chemical_element_discoveries` · [[Tin]] · [[Titanium]] · `Tonne` · `Tracer_ammunition` · [[Tungsten]] · `Ullmann's_Encyclopedia_of_Industrial_Chemistry` · `Upwelling` · [[Uranium]] · `Vacuum_tube` · `Van_der_Waals_radius` · [[Vanadium]] · `Vapor_pressure` · `Water_column` · `William_B._Jensen` · `William_Withering` · `Witherite` · [[Xenon]] · `Young's_modulus` · [[Ytterbium]] · [[Yttrium]] · `Yttrium_barium_copper_oxide` · [[Zinc]] · `Zinc_sulfide` · [[Zirconium]] > **Official MAIN - Chemical element, Z = 56.** Part of the Elements Canon (one canonical page per element). Infobox grounded in [Wikipedia: List of chemical elements](https://en.wikipedia.org/wiki/List_of_chemical_elements), fetched 2026-07-08. Full article: [Wikipedia: Barium](https://en.wikipedia.org/wiki/Barium). <!-- ELEMENTS_MICROSIM:BEGIN (auto-managed block - edits inside will be overwritten) --> ## Key facts (infobox) | | | |---|---| | Symbol - Z | Ba - 56 | | Group - Period - Block | 2 - 6 - s-block | | Atomic weight (Da) | 137.33 | | Density (g/cm3) | 3.51 | | Melting - Boiling (K) | 1000 - 2170 | | Electronegativity (Pauling) | 0.89 | | Crustal abundance (mg/kg) | 425 | | Origin | primordial | | Phase (STP) | solid | | Name origin | Greek barys, 'heavy' | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Barium was discovered in 1808 by English chemist Humphry Davy through electrolysis of molten barium oxide. The name derives from Greek barys, meaning heavy, referring to the high density of barium minerals. Barium is relatively abundant (425 mg/kg) and occurs primarily as barite (barium sulfate, BaSO₄) and witherite (barium carbonate, BaCO₃). Barium is a soft, silvery-white metal that reacts readily with oxygen and water. Soluble barium compounds are toxic and can cause muscular paralysis; however, insoluble barium sulfate is administered orally as a contrast agent in medical X-ray imaging because it is radiopaque and non-absorbable in the gastrointestinal tract. [model-prior - verify] Barium compounds are used in paints, coatings, and pigments. Barium ferrite magnets have applications in permanent magnets. [model-prior - verify] Barium fluoride windows are transparent to infrared radiation and used in optical instruments. The corpus meets barium as a heavy metal with contrasting properties: toxic in soluble form, yet essential as a diagnostic imaging tool (barium meals) and a platform for industrial chemistry. ## Corpus connections - R.E.A.C.T.I.O.N. - the Chemistry hub - Centers of Excellence Portal - [[Technetium|Technetium - the element made before found]] - the canon's patron - and Technitium, the School - Solar System Mining Surveys - barium as a heavy metal in geochemistry ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Ba, group 2, period 6), isotope notation, and hazard pictograms ghs where handling demands it. ## Sources Infobox: [en.wikipedia.org/wiki/List_of_chemical_elements](https://en.wikipedia.org/wiki/List_of_chemical_elements) (fetched 2026-07-08); etymology per the same table's notes. Story sources to be added at enrichment. <!-- REAL-GENERATIVE-MEDIA:START --> ## From the Real GENERATIVE library > Barium is a chemical element; it has symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. ([Wikipedia](https://en.wikipedia.org/wiki/Barium)) <!-- REAL-GENERATIVE-MEDIA:END --> ## Navigation - Canon: Elements Canon index - neighbors by Z: [[Caesium|Caesium (55)]] - [[Lanthanum|Lanthanum (57)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Barium) : [Wikitube](https://en.wikitube.io/wiki/Barium) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*