Einsteinium - Wikiparency

# Einsteinium ## 🧊 Einsteinium · 3D (three.js) <iframe src="https://wikitube-elements.netlify.app/?el=Es&embed=1" width="100%" height="620" frameborder="0" style="border:0;border-radius:12px;overflow:hidden" allowfullscreen loading="lazy" title="The Elements 3D microsim - Einsteinium"></iframe> *Einsteinium 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=Es)  !Einsteinium plate.svg *Plate 99 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.* - Hydrogen bomb - thermonuclear synthesis of transuranium elements - Nuclear fallout - fallout from weapons tests containing einsteinium - Transuranic element - synthesis via neutron capture in nuclear reactions - Albert Einstein - theoretical physicist honored in einsteinium's name ## Links (Wikipedia order)  `Actinide` · [[Actinium]] · `Albert_Einstein` · `Albert_Einstein:_Creator_and_Rebel` · `Albert_Einstein_Archives` · `Albert_Einstein_Award` · `Albert_Einstein_House` · `Albert_Einstein_Medal` · `Albert_Einstein_Memorial` · `Albert_Einstein_Peace_Prize` · `Albert_Einstein_World_Award_of_Science` · `Albert_Einstein_in_popular_culture` · `Albert_Ghiorso` · `Alkali_metal` · `Alkaline_earth_metal` · [[Alpha_decay]] · [[Aluminium]] · `Aluminium_chloride` · [[Americium]] · `Ammonium` · `Anion-exchange_chromatography` · `Annus_mirabilis_papers` · [[Antimony]] · [[Argon]] · `Argonne_National_Laboratory` · [[Arsenic]] · [[Astatine]] · `Atomic_number` · [[Barium]] · `Barn_(unit)` · [[Berkelium]] · [[Beryllium]] · [[Beta_decay]] · [[Bismuth]] · `Block_(periodic_table)` · `Bohr_magneton` · [[Bohrium]] · `Bohr–Einstein_debates` · [[Boiling_point]] · [[Boron]] · `Boron_group` · `Bose–Einstein_condensate` · `Bose–Einstein_correlations` · `Bose–Einstein_statistics` · `Brain_of_Albert_Einstein` · [[Bromine]] · `Brownian_motion` · `Buffer_solution` · `Bulk_modulus` · `CAS_Registry_Number` · [[Cadmium]] · [[Caesium]] · [[Calcium]] · `Calcium-48` · [[Californium]] · [[Carbon]] · `Carbon_group` · [[Cerium]] · `Chalcogen` · `Chelation` · `Chemical_symbol` · [[Chlorine]] · `Chlorine_trifluoride` · [[Chromium]] · `Citric_acid` · [[Cobalt]] · [[Cold_War]] · [[Copernicium]] · [[Copper]] · `Cosmological_constant` · `Critical_mass` · [[Crystal_structure]] · [[Cubic_crystal_system]] · `Curie_temperature` · `Curie–Weiss_law` · [[Curium]] · [[Darmstadtium]] · [[Decay_product]] · [[Density]] · `Deuterium` · `Die_Grundlagen_der_Einsteinschen_Relativitäts-Theorie` · `Dimitrovgrad,_Russia` · [[Dubnium]] · [[Dysprosium]] · `Einstein's_Blackboard` · `Einstein's_Cosmos` · `Einstein's_Gift` · `Einstein's_thought_experiments` · `Einstein's_unsuccessful_investigations` · `Einstein:_His_Life_and_Universe` · `Einstein_Papers_Project` · `Einstein_Prize_(APS)` · `Einstein_Prize_for_Laser_Science` · `Einstein_and_Eddington` · `Einstein_and_Religion` · `Einstein_coefficients` · `Einstein_family` · `Einstein_field_equations` · `Einstein_for_Beginners` · `Einstein_in_Oxford` · `Einstein_on_the_Run` · `Einstein_radius` · `Einstein_refrigerator` · `Einstein_relation_(kinetic_theory)` · `Einstein_ring` · `Einstein_solid` · `Einsteinhaus` · `Einsteinium(II)_bromide` · `Einsteinium(II)_chloride` · `Einsteinium(II)_iodide` · `Einsteinium(III)_bromide` · `Einsteinium(III)_chloride` · `Einsteinium(III)_iodide` · `Einsteinium(III)_oxide` · `Einsteinium_compounds` · `Einsteinium_hexafluoride` · `Einsteinium_oxychloride` · `Einsteinium_tetrafluoride` · `Einstein–Bergson_debate` · `Einstein–Cartan_theory` · `Einstein–Infeld–Hoffmann_equations` · `Einstein–Oppenheimer_relationship` · `Einstein–de_Haas_effect` · `Electron_capture` · `Electron_configuration` · `Electronegativity` · `Elsa_Einstein` · `Elution` · `Emergency_Committee_of_Atomic_Scientists` · `Enewetak_Atoll` · `Enrico_Fermi` · `Equivalence_principle` · [[Erbium]] · [[Europium]] · `Evelyn_Einstein` · [[Fermium]] · [[Flerovium]] · `Fluoride` · [[Fluorine]] · [[Francium]] · [[Gadolinium]] · [[Gallium]] · `General_relativity` · `Genius_(American_TV_series)` · [[Germanium]] · [[Gold]] · `Gravitational_wave` · `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]] · `Halide` · `Halogen` · `Hans_Albert_Einstein` · [[Hassium]] · [[Helium]] · `Hexagonal_crystal_family` · `High_Flux_Isotope_Reactor` · [[Holmium]] · `Hydrochloric_acid` · [[Hydrogen]] · `Hydrogen_chloride` · `I.Q._(film)` · `I_Am_Albert_Einstein` · [[Indium]] · `Insignificance_(film)` · `Introducing_Relativity` · [[Iodine]] · `Ion_exchange` · [[Ionization_energy]] · [[Iridium]] · [[Iron]] · `Isotope` · `Isotopes_of_einsteinium` · `Ivy_Mike` · `John_McPhee` · `Kalinga_Prize` · `Kelvin` · [[Krypton]] · `Laboratory_rat` · [[Lanthanum]] · `Lanthanum_oxide` · `Lawrence_Berkeley_National_Laboratory` · [[Lawrencium]] · [[Lead]] · `Lenin_Komsomol_Prize` · `Linear_particle_accelerator` · [[Liquid_helium]] · `List_of_awards_and_honors_received_by_Albert_Einstein` · `List_of_chemical_element_name_etymologies` · `List_of_data_references_for_chemical_elements` · `List_of_scientific_publications_by_Albert_Einstein` · `List_of_things_named_after_Albert_Einstein` · [[Lithium]] · `Lithium_fluoride` · [[Livermorium]] · `Los_Alamos_National_Laboratory` · `Luminescence` · [[Lutetium]] · [[Magnesium]] · `Magnetism` · `Maja_Einstein` · [[Manganese]] · `Mass_number` · `Mass–energy_equivalence` · `Max_Talmey` · [[Meitnerium]] · `Melting_point` · [[Mendelevium]] · [[Mercury_(element)]] · `Mileva_Marić` · `Molar_concentration` · [[Molybdenum]] · `Monoclinic_crystal_system` · [[Moscovium]] · `Murder_of_the_family_of_Robert_Einstein` · `Natural_abundance` · `Natural_nuclear_fission_reactor` · [[Neodymium]] · [[Neon]] · [[Neptunium]] · [[Neutron]] · `Neutron_capture` · `Neutron_flux` · `Neutron_reflector` · `Nevada_Test_Site` · [[Nickel]] · [[Nihonium]] · [[Niobium]] · [[Nitrogen]] · [[Nobelium]] · [[Noble_gas]] · `Norman_Greenwood` · `Nuclear_fission` · [[Nuclear_fusion]] · `Nuclear_isomer` · `Nuclear_reactor` · [[Nucleosynthesis]] · `Oak_Ridge_National_Laboratory` · `Octahedral_molecular_geometry` · [[Oganesson]] · `Oklo` · `Oppenheimer_(film)` · [[Osmium]] · `Outline_of_Albert_Einstein` · `Oxidation_state` · [[Oxygen]] · `PH` · `Pacific_Ocean` · [[Palladium]] · `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` · `Phase_(matter)` · [[Phosphorus]] · `Photoelectric_effect` · `Picasso_at_the_Lapin_Agile` · `Picometre` · [[Platinum]] · [[Plutonium]] · `Pnictogen` · `Political_views_of_Albert_Einstein` · [[Polonium]] · [[Potassium]] · [[Praseodymium]] · `Primordial_nuclide` · [[Promethium]] · [[Protactinium]] · `R-process` · `Radiation_therapy` · [[Radioactive_decay]] · [[Radium]] · [[Radon]] · `Relativity:_The_Special_and_the_General_Theory` · `Relics:_Einstein's_Brain` · `Religious_and_philosophical_views_of_Albert_Einstein` · `Research_Institute_of_Atomic_Reactors` · [[Rhenium]] · [[Rhodium]] · [[Roentgenium]] · `Room_temperature` · [[Rubidium]] · `Russell–Einstein_Manifesto` · [[Ruthenium]] · [[Rutherfordium]] · [[Samarium]] · `Samarium(II)_chloride` · [[Scandium]] · [[Seaborgium]] · [[Selenium]] · `Siegbert_Einstein` · [[Silicon]] · [[Silver]] · [[Sodium]] · `Solid` · `Space_group` · `Special_relativity` · `Spectral_line` · [[Spontaneous_fission]] · `Standard_temperature_and_pressure` · `Stockholm` · [[Strontium]] · [[Sulfur]] · `Superheavy_element` · `Supernova` · `Surveyor_5` · `Sweden` · `Synthetic_element` · `Synthetic_radioisotope` · `TNT_equivalent` · [[Tantalum]] · `Tea_leaf_paradox` · [[Technetium]] · `Teleparallelism` · [[Tellurium]] · [[Tennessine]] · [[Terbium]] · [[Thallium]] · `The_Einstein_Theory_of_Relativity` · `The_Evolution_of_Physics` · `The_Meaning_of_Relativity` · `The_World_as_I_See_It_(book)` · `Theory_of_relativity` · `Thermonuclear_weapon` · [[Thorium]] · [[Thulium]] · `Timeline_of_chemical_element_discoveries` · [[Tin]] · [[Titanium]] · `Transuranium_element` · [[Tungsten]] · `University_of_California,_Berkeley` · `Ununennium` · [[Uranium]] · `Uranium(III)_chloride` · `Uranium-238` · [[Vanadium]] · `Watt` · `Wave–particle_duality` · [[Wayback_Machine]] · `Why_Socialism?` · [[Xenon]] · `Young_Einstein` · [[Ytterbium]] · [[Yttrium]] · [[Zinc]] · [[Zirconium]] · `Über_die_von_der_molekularkinetischen_Theorie_der_Wärme_geforderte_Bewegung_von_in_ruhenden_Flüssigkeiten_suspendierten_Teilchen` > **Official MAIN - Chemical element, Z = 99.** 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: Einsteinium](https://en.wikipedia.org/wiki/Einsteinium).  ## Key facts (infobox) | | | |---|---| | Symbol - Z | Es - 99 | | Group - Period - Block | f - 7 - f-block | | Atomic weight (Da) | [252] | | Density (g/cm3) | 8.84 | | Melting - Boiling (K) | 1133 - (1269) | | Electronegativity (Pauling) | 1.3 | | Crustal abundance (mg/kg) | - | | Origin | synthetic | | Phase (STP) | solid | | Name origin | Albert Einstein | *Bracketed weights are the mass number of the most stable isotope; values in parentheses are predictions (per the source table).* ## Story Einsteinium was discovered in 1952 in the debris of the Ivy Mike thermonuclear (hydrogen bomb) test conducted on Enewetak Atoll. The element was identified by Glenn T. Seaborg and his team, who detected it in radioactive fallout samples. Einsteinium was named in honor of Albert Einstein, the theoretical physicist whose mass-energy equivalence E=mc² underpins nuclear reactions. Einsteinium-252, the longest-lived isotope, has a half-life of about 471 days. [model-prior - verify] Einsteinium is a synthetic actinide metal with no primordial occurrence. It is extremely radioactive and toxic, produced only in trace quantities in nuclear reactors or as a weapon-test byproduct. Because it is so rare and unstable, einsteinium has no practical applications outside of basic nuclear physics research. The element's discovery as a fallout product highlighted the widespread creation of transuranic elements in thermonuclear explosions. In the canon, einsteinium embodies the atomic age at its most dramatic: an element created in the thermonuclear inferno, detected in the radioactive dust of nuclear testing, and named after the greatest theorist of the twentieth century. It is a haunting reminder of how particle physics and geopolitical power became entangled in the Cold War. ## Corpus connections Einsteinium was created in thermonuclear detonation and discovered in weapon-test fallout. It links nuclear physics to Cold War geopolitics and is named after Einstein's relativistic theories that made nuclear energy possible. - 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 - [Thermonuclear weapon](https://en.wikipedia.org/wiki/Thermonuclear_weapon) - hydrogen bomb tests that created einsteinium - [Nuclear fallout](https://en.wikipedia.org/wiki/Nuclear_fallout) - transuranic elements in atmospheric debris ## Vocational-Technical Semiotics The element speaks the canon's shared signs: the periodic table cell (Es, group f, 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: [[Californium|Californium (98)]] - [[Fermium|Fermium (100)]] - R.E.A.C.T.I.O.N. - Centers of Excellence ## Wikipedia : Wikitube **Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Einsteinium) : [Wikitube](https://en.wikitube.io/wiki/Einsteinium) ## Previous hub tags Tree parents: [[Helium]] · [[Hydrogen]] · [[Oxygen]]. Legacy hubs: none. --- *Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*