# Oganesson ## 🧊 Oganesson · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Og&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Oganesson"></iframe> *Oganesson 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=Og) <!-- ELEMENTS_MICROSIM:END --> !Oganesson plate.svg *Plate 118 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.* - Californium-249 - target nucleus for Oganesson synthesis - Calcium-48 - accelerated projectile creating Oganesson - [[Noble_gas|Noble gas]] - the nominal group Oganesson formally occupies at period 7 - Yuri Oganessian - physicist whose vision completed the synthetic periodic table ## Links (Wikipedia order) <!-- injected from _registry/childlinks/Oganesson.json (2026-07-30T02:09:12Z) --> `Aaldert_Wapstra` · [[Actinium]] · `Albert_Einstein` · `Albert_Ghiorso` · `Alkali_metal` · `Alkaline_earth_metal` · [[Alpha_decay]] · [[Aluminium]] · `Alzheimer's_disease` · `American_Institute_of_Physics` · [[Americium]] · [[Antimony]] · [[Argon]] · `Aristid_von_Grosse` · `Armenian_language` · [[Arsenic]] · [[Astatine]] · `Atomic_Data_and_Nuclear_Data_Tables` · [[Atomic_mass]] · `Atomic_nucleus` · `Atomic_number` · `Atomic_radius` · `Australian_National_University` · `Band_gap` · [[Barium]] · `Barn_(unit)` · [[Berkelium]] · [[Beryllium]] · [[Beta_decay]] · [[Bismuth]] 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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: Oganesson](https://en.wikipedia.org/wiki/Oganesson). <!-- ELEMENTS_MICROSIM:BEGIN (auto-managed block - edits inside will be overwritten) --> ## Key facts (infobox) | | | |---|---| | Symbol - Z | Og - 118 | | Group - Period - Block | 18 - 7 - p-block | | Atomic weight (Da) | [294] | | Density (g/cm3) | (7) | | Melting - Boiling (K) | (325) - (450) | | Electronegativity (Pauling) | - | | Crustal abundance (mg/kg) | - | | Origin | synthetic | | Phase (STP) | unknown | | Name origin | Yuri Oganessian, Russian physicist | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Oganesson was first synthesized in 2006 at the Flerov Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research in Dubna, Russia, through the bombardment of californium-249 with calcium-48 ions. The element is named for Yuri Oganessian, a Russian nuclear physicist who led the superheavy element synthesis program at JINR and whose decades of persistence and experimental vision made elements Z 114-118 possible. Og-294 has a half-life of approximately 0.9 milliseconds [model-prior - verify], the shortest half-life in this batch, existing only long enough to be detected through its nuclear decay. Oganesson is the last element of period 7, completing the periodic table's seventh row and closing the frontier that Technetium opened nearly a century earlier. Occupying group 18, it nominally belongs to the noble gases, yet relativistic effects may make it chemically reactive—predicted to behave more like a halogen than an inert gas [model-prior - verify]. Og-294 exists only as individual nuclei in accelerator products, each lasting a fraction of a second before decay. The naming honors Yuri Oganessian, the physicist whose vision and determination pushed the frontier to its current limit. From Technetium (1937, half-life 4.2 million years) to Oganesson (2006, half-life 0.9 milliseconds), the synthetic periodic table is the monument to human mastery over matter itself. Oganesson stands as the apex of that arc—the final, most elusive confirmation that the periodic table continues as far as human technology can reach. ## 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 - [Yuri Oganessian](https://en.wikipedia.org/wiki/Yuri_Oganessian) - Russian nuclear physicist and pioneer of superheavy element synthesis ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Og, group 18, period 7), 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. ## Navigation - Canon: Elements Canon index - neighbors by Z: [[Tennessine|Tennessine (117)]] - - - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Oganesson) : [Wikitube](https://en.wikitube.io/wiki/Oganesson) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*