# Gallium ## 🧊 Gallium · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Ga&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Gallium"></iframe> *Gallium 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=Ga) <!-- ELEMENTS_MICROSIM:END --> !Gallium plate.svg *Plate 31 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.* - Gallium arsenide - semiconductor material and optoelectronics - Light-emitting diode (LED) - gallium nitride and photoemission - Solar cell - gallium compounds in photovoltaics ## Links (Wikipedia order) <!-- injected from _registry/childlinks/Gallium.json (2026-07-30T02:09:12Z) --> `3D_printing` · `3G` · `4G` · `ACS_Applied_Nano_Materials` · `Acid` · [[Actinium]] · `Actuator` · `Adduct` · `AlGa` · `Alkali_metal` · `Alkaline_earth_metal` · `Allotropes_of_plutonium` · [[Alloy]] · `Alum` · [[Aluminium]] · `Aluminium_gallium_arsenide` · `Aluminium_hydride` · `Aluminium_hydroxide` · `Aluminium_oxide` · [[Americium]] · `Amine` · `Ammonia` · `Anisotropy` · [[Antimony]] · [[Argon]] · [[Arsenic]] · [[Astatine]] · `Atomic_number` · `Atomic_radius` · `Baksan_Neutrino_Observatory` · [[Barium]] · `Bauxite` · `Bayer_process` · `Beaufort_Sea` · `Benzene` · [[Berkelium]] · [[Beryllium]] · `Biological_half-life` · [[Bismuth]] · `Block_(periodic_table)` · [[Bohrium]] · 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· `Triple_point` · [[Tungsten]] · `Unit_cell` · `United_States_Geological_Survey` · [[Uranium]] · `Van_der_Waals_radius` · [[Vanadium]] · `Vapor_pressure` · `Violet_(color)` · [[Wayback_Machine]] · `Wetting` · [[Xenon]] · `Young's_modulus` · [[Ytterbium]] · [[Yttrium]] · [[Zinc]] · `Zinc_sulfide` · [[Zirconium]] · `Zone_melting` > **Official MAIN - Chemical element, Z = 31.** 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: Gallium](https://en.wikipedia.org/wiki/Gallium). <!-- ELEMENTS_MICROSIM:BEGIN (auto-managed block - edits inside will be overwritten) --> ## Key facts (infobox) | | | |---|---| | Symbol - Z | Ga - 31 | | Group - Period - Block | 13 - 4 - p-block | | Atomic weight (Da) | 69.723 | | Density (g/cm3) | 5.91 | | Melting - Boiling (K) | 302.9146 - 2673 | | Electronegativity (Pauling) | 1.81 | | Crustal abundance (mg/kg) | 19 | | Origin | primordial | | Phase (STP) | solid | | Name origin | Latin Gallia, 'France' | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Gallium was discovered in 1875 by French chemist Paul-Émile Lecoq de Boisbaudran, who detected it spectroscopically in zinc ores from the Pyrenees. Lecoq named it "gallium," using the Latin word for France (Gallia) and making a witty pun on his own surname ("lecoq" means "rooster" in French, and the Latin for rooster is "gallus"). Remarkably, Mendeleev had predicted the existence and properties of gallium only six years earlier as "eka-aluminum," demonstrating once again the periodic table's predictive power. For nearly a century, gallium remained a laboratory curiosity with only specialized applications [model-prior - verify]. Gallium is a soft, silvery metal with the remarkable property that it melts in your hand—its melting point (302.91 K or about 30°C) is far below room temperature for most climates [model-prior - verify]. It does not occur as a native element in nature; instead, it is found in trace amounts in many minerals, particularly zinc ores and germanium deposits. The modern era of gallium began in the 1950s with the development of semiconductor technology. Gallium arsenide (GaAs) and gallium nitride (GaN) are fundamental to optoelectronics: LEDs, laser diodes, and photodiodes [model-prior - verify]. In the corpus, gallium represents the power of periodic-law prediction and the triumph of semiconductor physics. Its entry into the periodic table as an eka-element, and its later discovery confirming Mendeleev's theoretical framework, makes it a symbol of how systematic theory guides experimental discovery. Modern gallium devices—solar cells, light emitters, high-frequency transistors—are engines of the information age and the Technate's computational layer [model-prior - verify]. ## 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 - Technate Expansion schema - gallium's role in optoelectronics and the information layer ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Ga, group 13, period 4), 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: [[Zinc|Zinc (30)]] - [[Germanium|Germanium (32)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Gallium) : [Wikitube](https://en.wikitube.io/wiki/Gallium) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*