Scandium - Wikiparency

# Scandium ## 🧊 Scandium · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Sc&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Scandium"></iframe> *Scandium 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=Sc)  !Scandium plate.svg *Plate 21 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.* - [[Scandium|Scandium extraction and uses]] - rare-earth mining and purification - Aluminum-scandium alloys - aerospace applications and density reduction - Solid-state scandium lasers - frequency doubling and medical imaging ## Links (Wikipedia order)  `Abundance_of_elements_in_Earth's_crust` · [[Actinium]] · `Alkali_metal` · `Alkaline_earth_metal` · [[Aluminium]] · `Aluminium_alloy` · `Aluminium_hydroxide_oxide` · `Aluminium–scandium_alloys` · [[Americium]] · `Anisotropy` · [[Antimony]] · [[Argon]] · [[Arsenic]] · [[Astatine]] · [[Atomic_mass]] · `Atomic_number` · `Atomic_radius` · [[Barium]] · [[Berkelium]] · [[Beryllium]] · `Bicycle_frame` · [[Bismuth]] · `Block_(periodic_table)` · [[Bohrium]] · [[Boiling_point]] · [[Boron]] · `Boron_group` · `Brinell_hardness_test` · [[Bromine]] · `Bulk_modulus` · `CAS_Registry_Number` · [[Cadmium]] · [[Caesium]] · [[Calcium]] · [[Californium]] · [[Carbon]] · `Carbon_group` · `Celsius` · [[Cerium]] · `Chalcogen` · [[Chemical_element]] · [[Chlorine]] · [[Chromium]] · `Close-packing_of_equal_spheres` · [[Cobalt]] · `Color_rendering_index` · `Commission_on_Isotopic_Abundances_and_Atomic_Weights` · `Coordination_number` · [[Copernicium]] · [[Copper]] · `Cosmic_ray_spallation` · `Covalent_radius` · [[Crystal_structure]] · [[Curium]] · `Cyclopentadienyl_complex` · [[Darmstadtium]] · [[Decay_product]] · [[Density]] · `Diagonal_relationship` · `Dmitri_Mendeleev` · [[Dubnium]] · [[Dysprosium]] · [[Einsteinium]] · `Electrical_resistivity_and_conductivity` · `Electrolysis` · `Electrolyte` · `Electron_capture` · `Electron_configuration` · `Electronegativity` · `Enthalpy_of_fusion` · `Enthalpy_of_vaporization` · [[Erbium]] · [[Europium]] · `Euxenite` · [[Fermium]] · [[Flerovium]] · [[Fluorine]] · [[Francium]] · `Gadolinite` · [[Gadolinium]] · [[Gallium]] · `General_Electric` · [[Germanium]] · [[Gold]] · `Group_(periodic_table)` · `Group_10_element` · `Group_11_element` · `Group_12_element` · 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[[Tellurium]] · [[Tennessine]] · [[Terbium]] · [[Thallium]] · `Thermal_expansion` · [[Thorium]] · [[Thulium]] · `Timeline_of_chemical_element_discoveries` · [[Tin]] · [[Titanium]] · `Tonne` · [[Tungsten]] · `United_States` · [[Uranium]] · `Van_der_Waals_radius` · [[Vanadium]] · `Vapor_pressure` · [[Wayback_Machine]] · [[Xenon]] · `Young's_modulus` · [[Ytterbium]] · [[Yttrium]] · [[Zinc]] · [[Zirconium]] > **Official MAIN - Chemical element, Z = 21.** 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: Scandium](https://en.wikipedia.org/wiki/Scandium).  ## Key facts (infobox) | | | |---|---| | Symbol - Z | Sc - 21 | | Group - Period - Block | 3 - 4 - d-block | | Atomic weight (Da) | 44.956 | | Density (g/cm3) | 2.985 | | Melting - Boiling (K) | 1814 - 3109 | | Electronegativity (Pauling) | 1.36 | | Crustal abundance (mg/kg) | 22 | | Origin | primordial | | Phase (STP) | solid | | Name origin | Latin Scandia, 'Scandinavia' | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Scandium was discovered in 1879 by Lars Fredrik Nilson in the mineral euxenite in Sweden, confirming a gap that Russian chemist Dmitri Mendeleev had predicted in 1869. Mendeleev called it "eka-boron" and predicted its atomic weight to within one percent—a triumph of periodic table theory that legitimized the table's structure and predictive power. The element remained largely a laboratory curiosity for over a century, present in small quantities in many minerals but rarely isolated in pure form. Scandium is a transition metal that sits in group 3 of the periodic table. It is highly reactive, particularly with oxygen and water, and occurs naturally only in compounds rather than as a free metal [model-prior - verify]. The element's scarcity and expensive extraction have confined most applications to aerospace, where its alloys with aluminum are valued for strength and light weight [model-prior - verify]. Scandium is also used in solid-state lasers and in specialized high-intensity discharge lamps [model-prior - verify]. In the Elements Canon, scandium serves as a bridge element between the d-block's group 3 and the rarer transition metals. It represents the structural principle that Mendeleev's periodic law could predict undiscovered elements—the same logic that undergirds the REACTION CHEMISTRY LIBRARY and the canon's broader claim that the periodic table is a map of discovery, not just a catalog. ## 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 - scandium's aerospace alloys ground the materials science layer of the Technate's rings ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Sc, group 3, 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: [[Calcium|Calcium (20)]] - [[Titanium|Titanium (22)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Scandium) : [Wikitube](https://en.wikitube.io/wiki/Scandium) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*