# Praseodymium ## 🧊 Praseodymium · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Pr&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Praseodymium"></iframe> *Praseodymium 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=Pr) <!-- ELEMENTS_MICROSIM:END --> !Praseodymium plate.svg *Plate 59 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.* - Neodymium magnet - Pr-Nd-B permanent magnets - Wind turbine - rare-earth magnets in generators - [[Electric_motor|Electric motor]] - permanent magnet motors - Didymium - historical element identification ## Links (Wikipedia order) <!-- injected from _registry/childlinks/Praseodymium.json (2026-07-30T02:09:12Z) --> `Absolute_zero` · `Actinide` · [[Actinium]] · `Aircraft_engine` · `Alkali_metal` · `Alkaline_earth_metal` · `Allotropy` · [[Alloy]] · [[Aluminium]] · [[Americium]] · `Ammonium_oxalate` · `Anisotropy` · [[Antimony]] · `Aqueous_solution` · [[Argon]] · [[Arsenic]] · [[Astatine]] · `Atomic_number` · `Atomic_radius` · `Axel_Fredrik_Cronstedt` · [[Barium]] · `Bastnäs` · `Bastnäsite` · [[Berkelium]] · [[Beryllium]] · [[Beta_decay]] · [[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` · `Carbonate` · `Carl_Auer_von_Welsbach` · `Carl_Gustaf_Mosander` · [[Ceres_(dwarf_planet)]] · `Cerite` · [[Cerium]] · `Chalcogen` · `Chemical_compound` · [[Chemical_element]] · [[Chlorine]] · [[Chromium]] · `Close-packing_of_equal_spheres` · [[Cobalt]] · `Commission_on_Isotopic_Abundances_and_Atomic_Weights` · [[Copernicium]] · [[Copper]] · `Covalent_radius` · [[Crystal_structure]] · [[Curium]] · [[Darmstadtium]] · [[Decay_product]] · [[Density]] · `Didymium` · `Disproportionation` · `Doping_(semiconductor)` · [[Dubnium]] · `Dwarf_planet` · [[Dysprosium]] · [[Einsteinium]] · `Electrical_resistivity_and_conductivity` · `Electride` · `Electron_capture` · `Electron_configuration` · `Electronegativity` · `Enthalpy_of_fusion` · `Enthalpy_of_vaporization` · [[Erbium]] · [[Europium]] · `Excited_state` · [[Fermium]] · `Ferrocerium` · [[Flerovium]] · [[Fluorine]] · `Fractional_crystallization_(chemistry)` · [[Francium]] · `GHS_hazard_pictograms` · `GHS_hazard_statements` · `GHS_precautionary_statements` · [[Gadolinium]] · [[Gallium]] · [[German_language]] · [[Germanium]] · `Gibbs_free_energy` · `Glass` · `Globally_Harmonized_System_of_Classification_and_Labelling_of_Chemicals` · `Goggles` · [[Gold]] · `Group_(periodic_table)` · `Group_10_element` · `Group_11_element` · `Group_12_element` · `Group_3_element` · `Group_4_element` · `Group_5_element` · `Group_6_element` · `Group_7_element` · `Group_8_element` · `Group_9_element` · [[Hafnium]] · [[Half-life]] · `Halogen` · [[Hassium]] · [[Helium]] · [[Holmium]] · [[Hydrogen]] · `Hydrogen_fluoride` · [[Indium]] · [[Iodine]] · [[Ionization_energy]] · [[Iridium]] · [[Iron]] · `Isotopes_of_cerium` · `Isotopes_of_neodymium` · `Isotopes_of_praseodymium` · `Jöns_Jacob_Berzelius` · `Kelvin` · [[Krypton]] · `Lanthanide` · [[Lanthanum]] · `Lattice_constant` · [[Lawrencium]] · [[Lead]] · `Leek` · `Leo_Moser` · `List_of_chemical_element_name_etymologies` · `List_of_data_references_for_chemical_elements` · [[Lithium]] · [[Livermorium]] · `Luminescence` · [[Lutetium]] · `Magic_number_(physics)` · [[Magnesium]] · `Magnetic_susceptibility` · `Magnetism` · [[Manganese]] · `Marc_Delafontaine` · `Martin_Heinrich_Klaproth` · `Mary_Elvira_Weeks` · [[Meitnerium]] · `Melting_point` · [[Mendelevium]] · [[Mercury_(element)]] · `Metal` · `Methylacidiphilum_fumariolicum` · `Mischmetal` · `Molar_heat_capacity` · [[Molybdenum]] · `Monazite` · `Monoisotopic_element` · `Mononuclidic_element` · [[Moscovium]] · `Mudpot` · `NFPA_704` · `Native_element_mineral` · `Natural_abundance` · [[Neodymium]] · [[Neon]] · [[Neptunium]] · [[Nickel]] · [[Nihonium]] · [[Niobium]] · `Nitric_acid` · [[Nitrogen]] · [[Nobelium]] · [[Noble_gas]] · `Non-stoichiometric_compound` · `Norman_Greenwood` · [[Oganesson]] · `Optical_amplifier` · `Optics` · `Organolanthanide_chemistry` · [[Osmium]] · `Oxalate` · `Oxford_English_Dictionary` · `Oxford_University_Press` · `Oxidation_state` · [[Oxygen]] · `Ozone` · [[Palladium]] · `Paul-Émile_Lecoq_de_Boisbaudran` · `Pearson_symbol` · `Period_(periodic_table)` · `Period_1_element` · `Period_2_element` · `Period_3_element` · `Period_4_element` · `Period_5_element` · `Period_6_element` · `Period_7_element` · `Periodic_table` · `Periodic_trends` · `Phase_(matter)` · `Phosphate` · [[Phosphorus]] · `Photonics` · `Pi_backbonding` · `Picometre` · [[Platinum]] · [[Plutonium]] · `Pnictogen` · `Poisson's_ratio` · [[Polonium]] · [[Positron_emission]] · [[Potassium]] · `Praseodymium(III)_acetate` · `Praseodymium(III)_bromide` · `Praseodymium(III)_carbonate` · `Praseodymium(III)_chloride` · `Praseodymium(III)_fluoride` · `Praseodymium(III)_iodide` · `Praseodymium(III)_oxide` · `Praseodymium(III)_sulfide` · `Praseodymium(III,IV)_oxide` · `Praseodymium(IV)_fluoride` · `Praseodymium(IV)_oxide` · `Praseodymium_antimonide` · `Praseodymium_arsenide` · `Praseodymium_bismuthide` · `Praseodymium_bromate` · `Praseodymium_monoselenide` · `Praseodymium_monosulfide` · `Praseodymium_oxyfluoride` · `Primordial_nuclide` · [[Promethium]] · [[Protactinium]] · [[Radioactive_decay]] · [[Radium]] · [[Radon]] · `Rare-earth_element` · [[Rhenium]] · [[Rhodium]] · [[Roentgenium]] · [[Rubidium]] · [[Ruthenium]] · [[Rutherfordium]] · [[Samarium]] · [[Scandium]] · [[Seaborgium]] · [[Selenium]] · `Shear_modulus` · `Silicate` · [[Silicon]] · `Silicon_tetrafluoride` · [[Silver]] · `Slow_light` · [[Sodium]] · `Sodium_fluoride` · `Sodium_hydroxide` · `Solid` · `Spallation` · `Specific_heat_capacity` · `Spectral_line` · `Speed_of_sound` · `Standard_atomic_weight` · `Standard_temperature_and_pressure` · [[Strontium]] · `Studio` · [[Sulfur]] · `Sulfuric_acid` · `Synthetic_radioisotope` · [[Tantalum]] · [[Technetium]] · [[Tellurium]] · [[Tennessine]] · [[Terbium]] · [[Thallium]] · [[Thorium]] · [[Thulium]] · `Timeline_of_chemical_element_discoveries` · [[Tin]] · [[Titanium]] · `Transition_metal` · `Tributyl_phosphate` · [[Tungsten]] · `Ullmann's_Encyclopedia_of_Industrial_Chemistry` · [[Uranium]] · [[Vanadium]] · `Vapor_pressure` · `Vickers_hardness_test` · `Vitreous_enamel` · [[Wayback_Machine]] · `Welding` · `Wilhelm_Hisinger` · [[Xenon]] · `Yellow` · `Young's_modulus` · [[Ytterbium]] · [[Yttrium]] · [[Zinc]] · [[Zirconium]] > **Official MAIN - Chemical element, Z = 59.** 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: Praseodymium](https://en.wikipedia.org/wiki/Praseodymium). <!-- ELEMENTS_MICROSIM:BEGIN (auto-managed block - edits inside will be overwritten) --> ## Key facts (infobox) | | | |---|---| | Symbol - Z | Pr - 59 | | Group - Period - Block | f - 6 - f-block | | Atomic weight (Da) | 140.91 | | Density (g/cm3) | 6.77 | | Melting - Boiling (K) | 1208 - 3793 | | Electronegativity (Pauling) | 1.13 | | Crustal abundance (mg/kg) | 9.2 | | Origin | primordial | | Phase (STP) | solid | | Name origin | Greek prasios didymos, 'green twin' | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Praseodymium was discovered in 1885 by Austrian chemist Carl Auer von Welsbach through spectroscopic separation of what had been called didymium. Its name comes from Greek prasios (green) and didymos (twin), reflecting both its color in some compounds and its separation from its twin element neodymium. Praseodymium is moderately scarce among rare earths (9.2 mg/kg). Praseodymium is a soft, silvery metal that forms stable +3 and +4 oxidation states. It produces strong, permanent magnets in alloys with neodymium and boron (Nd-Pr-B magnets). [model-prior - verify] Praseodymium compounds are used in permanent magnets for motors and generators, particularly in wind turbine drive systems and electric vehicle drivetrains. [model-prior - verify] Praseodymium oxide is used as a yellow pigment in paints and ceramics. The corpus engages praseodymium through the rare-earth magnet story: Pr-Nd-B magnets are critical to wind energy and electrification, making praseodymium foundational to the renewable energy supply chain. ## 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 - praseodymium magnets in wind turbines ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Pr, group f, 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. ## Navigation - Canon: Elements Canon index - neighbors by Z: [[Cerium|Cerium (58)]] - [[Neodymium|Neodymium (60)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Praseodymium) : [Wikitube](https://en.wikitube.io/wiki/Praseodymium) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*