Logos Etymon Semantic Elements (118)

Scientific Reference

  • Use group headers (Alkali, Alkaline Earth, Transition, etc.)
  • Under each group, a Markdown table with key fields:
    • ID, Symbol, Name, Atomic No., Category, Block, State
    • Etymology
    • Morpheme Breakdown (Logos Etymon)
    • Semantic Role
    • Interdisciplinary Fields
    • Material Class
    • Functional Property
    • Nuclear Reference
    • Discovery

Periodic Table


Alkali Metals

Group 1 electropositive metals; strong reducing agents; ionic bonding.

IDSymbolNameAtomic No.CategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.hydrogenHHydrogen1Reactive nonmetal*sGasGreek ‘hydro’ (water) + ‘gen’ (creator)hydro+genWater-former; life origin anchornat.chem, nat.physics, nat.bioNonmetalFuels fusion, organic base1H,2H stable; 3H radioactive1766 Cavendish
elem.lithiumLiLithium3Alkali metalsSolidGreek ‘lithos’ (stone)lithosStone-metal; electropositive donornat.chem, nat.earth, app.engMetalRechargeable batteries6Li,7Li stable1817 Arfvedson
elem.sodiumNaSodium11Alkali metalsSolidFrom soda; Na from Latin natriumsoda/natriumSalt-metal; electrolytenat.chem, nat.earth, app.engMetalGlass, chemicals, nerves23Na stable1807 Davy
elem.potassiumKPotassium19Alkali metalsSolidPotash; K from kaliumpotash+kaliumSalt-former; plant nutrientnat.chem, nat.earth, app.medMetalFertilizers, salt balance39K,41K stable; 40K trace1807 Davy
elem.rubidiumRbRubidium37Alkali metalsSolidLatin rubidus (red)rubidusRed-line spectral elementnat.chem, nat.physicsMetalResearch, photocells85Rb,87Rb stable1861 Bunsen/Kirchhoff
elem.cesiumCsCesium55Alkali metalsSolidLatin caesius (sky-blue)caesiusBlue spectral linesnat.chem, nat.physicsMetalAtomic clocks, drilling fluids133Cs stable; 137Cs fission1860 Bunsen/Kirchhoff
elem.franciumFrFrancium87Alkali metalsSolidFrancefranceHeaviest alkali; highly unstablenat.chem, nat.physicsMetalRadioactive tracerNo stable isotopes1939 Perey

Alkaline Earth Metals

Group 2 divalent metals; structural/biochemical roles.

IDSymbolNameAtomic No.CategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.berylliumBeBeryllium4Alkaline earth metalsSolidFrom beryl (Greek beryllos)beryllosLight, stiff, transparent to X-raysnat.chem, nat.earthMetalAerospace, nuclear moderators9Be stable1798 Vauquelin
elem.magnesiumMgMagnesium12Alkaline earth metalsSolidMagnesia, GreecemagnesiaLight, structural ionnat.chem, nat.bioMetalChlorophyll core, alloys24,25,26Mg stable1808 Davy
elem.calciumCaCalcium20Alkaline earth metalsSolidLatin calx (lime)calxBone-builder, cement basenat.chem, nat.bioMetalBones, shells, concrete40Ca stable1808 Davy
elem.strontiumSrStrontium38Alkaline earth metalsSolidStrontian, ScotlandstrontianFirework red colorationnat.chem, app.engMetalPyrotechnics, ferrites84–88Sr stable1790 Crawford
elem.bariumBaBarium56Alkaline earth metalsSolidGreek barys (heavy)barysHeavy-metal salt producernat.chem, app.medMetalBarium contrast in X-ray130,138Ba stable1808 Davy
elem.radiumRaRadium88Alkaline earth metalsSolidLatin radius (ray)radiusRadioactive luminous emitternat.chem, nat.physicsMetalLegacy luminescenceNo stable isotopes1898 Curie

Transition Metals

d-block, variable oxidation states, catalysis, colored complexes.

IDSymbolNameZCatBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.scandiumScScandium21Transition metaldSolidFrom Scandia (Scandinavia)scandiaLight transition metalnat.chem, nat.earthMetalAerospace alloys45Sc stable1879 Nilson
elem.titaniumTiTitanium22Transition metaldSolidNamed after TitanstitanStrong, lightnat.chem, app.engMetalAerospace, implants46–50Ti stable1791 Gregor
elem.vanadiumVVanadium23Transition metaldSolidVanadis (Freyja)vanadisColored salts, variable valencenat.chemMetalSteel alloys, catalysts51V stable1830 Sefström
elem.chromiumCrChromium24Transition metaldSolidGreek chroma (color)chromaColor compounds, corrosion resistantnat.chemMetalStainless steel, pigments50–54Cr stable1797 Vauquelin
elem.manganeseMnManganese25Transition metaldSolidMagnesia negramagnesiaEnzyme cofactor, steel additivenat.chem, nat.bioMetalBatteries, steels55Mn stable1774 Gahn
elem.ironFeIron26Transition metaldSolidLatin ferrumferrumMars-metal; hemoglobin corenat.chem, nat.bio, app.engMetalSteel, blood, magnets54–58Fe stableAncient
elem.cobaltCoCobalt27Transition metaldSolidGerman kobold (goblin)koboldPigments, magnetsnat.chem, nat.bioMetalAlloys, vitamin B1259Co stable1735 Brandt
elem.nickelNiNickel28Transition metaldSolidKupfernickel (false copper)nickelStainless steel componentnat.chem, app.engMetalAlloys, batteries58–64Ni stable1751 Cronstedt
elem.copperCuCopper29Transition metaldSolidCyprus (cuprum)cuprumVenus-metal; conductornat.chem, app.engMetalWiring, coins63,65Cu stableAncient
elem.zincZnZinc30Transition metaldSolidGerman zinke (prong)zinkeGalvanization metalnat.chem, app.engMetalGalvanized steel, alloys64–70Zn stableAncient

Post-transition Metals

p-block metals; softer, lower melting points, form alloys, industrial uses.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.aluminumAlAluminum13Post-transition metalpSolidLatin alumen (alum)alumenLightweight, corrosion-resistantnat.chem, app.engMetalAerospace, packaging27Al stable1825 Ørsted/Wöhler
elem.galliumGaGallium31Post-transition metalpSolidLatin Gallia (France)galliaMelts in hand, electronicsnat.chem, app.engMetalSemiconductors, LEDs69,71Ga stable1875 de Boisbaudran
elem.indiumInIndium49Post-transition metalpSolidIndigo spectral lineindigoSoft, conductivenat.chem, app.engMetalTouchscreens, solders113,115In stable1863 Reich/Richter
elem.tinSnTin50Post-transition metalpSolidLatin stannumstannumJupiter-metal; alloysnat.chem, app.engMetalBronzes, solders, plating112Sn,114–120Sn stableAncient
elem.thalliumTlThallium81Post-transition metalpSolidGreek thallos (green shoot)thallosToxic green-line elementnat.chem, app.engMetalElectronics, optics (limited)203,205Tl stable1861 Crookes
elem.leadPbLead82Post-transition metalpSolidLatin plumbumplumbumSaturn-metal; dense, softnat.chem, app.engMetalBatteries, shielding204–208Pb stableAncient
elem.bismuthBiBismuth83Post-transition metalpSolidGerman WismutwismutDense, low-toxicity heavy metalnat.chem, app.engMetalAlloys, cosmetics, meds209Bi long-lived α emitter18th c.

Metalloids

Semiconductors, border properties; amphoteric chemistry.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.boronBBoron5MetalloidpSolidArabic buraq (borax)buraqBorder element; neutron absorbernat.chem, hyb.materialsMetalloidBorosilicate glass, BN ceramics10,11B stable1808 Davy et al.
elem.siliconSiSilicon14MetalloidpSolidLatin silex (flint)silexEarth’s crust backbone; semiconductornat.chem, hyb.materialsMetalloidElectronics, photovoltaics28–30Si stable1823 Berzelius
elem.germaniumGeGermanium32MetalloidpSolidNamed after GermanygermaniaSemiconductor, transparent to IRnat.chem, hyb.materialsMetalloidOptics, electronics70,72,73,74,76Ge stable1886 Winkler
elem.arsenicAsArsenic33MetalloidpSolidGreek arsenikon (orpiment)arsenikonToxic metalloid, poisons + semiconductorsnat.chem, nat.bioMetalloidGaAs semiconductors, pesticides75As stableAncient
elem.antimonySbAntimony51MetalloidpSolidLatin stibiumstibiumSemimetal; cosmetics, alloysnat.chem, app.engMetalloidFlame retardants, alloys121,123Sb stableAncient
elem.telluriumTeTellurium52MetalloidpSolidLatin tellus (earth)tellusSemiconductor; thermoelectricsnat.chem, hyb.materialsMetalloidSolar panels, alloys120,122,123,124,125,126Te stable1782 Müller
elem.poloniumPoPolonium84MetalloidpSolidNamed after PolandpoloniaHighly radioactive border elementnat.chem, nat.physicsMetalloidHeat source (space), alpha emitterNo stable isotopes1898 Curie

Reactive Nonmetals

C, H, N, O, P, S, Se — covalent frameworks, biochemistry.

IDSymbolNameZCatBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.carbonCCarbon6Reactive nonmetalpSolidLatin carbo (coal)carboBackbone of life; multiple allotropesnat.chem, nat.bioNonmetalDiamond, graphite, graphene12C,13C stable; 14C datingAncient
elem.nitrogenNNitrogen7Reactive nonmetalpGasGreek nitron + gennitron+genAtmosphere base, fertilizernat.chem, nat.bioNonmetalAmmonia, fertilizers14,15N stable1772 Rutherford
elem.oxygenOOxygen8Reactive nonmetalpGasGreek oxys + genoxys+genOxidizer, respirationnat.chem, nat.bioNonmetalMedical O2, combustion16,17,18O stable1774 Priestley/Scheele
elem.phosphorusPPhosphorus15Reactive nonmetalpSolidGreek phosphoros (light-bearer)phosphorosDNA backbone, ATPnat.chem, nat.bioNonmetalMatches, fertilizers, DNA31P stable1669 Brand
elem.sulfurSSulfur16Reactive nonmetalpSolidLatin sulphur (brimstone)sulphurVolcano/brimstone elementnat.chem, nat.bioNonmetalVulcanization, sulfuric acid32,33,34,36S stableAncient
elem.seleniumSeSelenium34Reactive nonmetalpSolidGreek selene (moon)seleneMoon-metal, semiconductornat.chem, nat.bioNonmetalPhotovoltaics, enzymes74,76,77,78,80,82Se stable1817 Berzelius

Halogens

Group 17 electronegative nonmetals; salt formers; powerful oxidizers.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.fluorineFFluorine9HalogenpGasLatin fluere (to flow)fluereSalt-former; strongest oxidizernat.chem, nat.bio, hyb.env_sci, app.medNonmetalTeflon, refrigerants19F stable1886 Moissan
elem.chlorineClChlorine17HalogenpGasGreek chloros (green-yellow)chlorosSalt-metal partner; disinfectantnat.chem, nat.bio, hyb.env_sci, app.medNonmetalPVC, bleach, disinfection35,37Cl stable1774 Scheele
elem.bromineBrBromine35HalogenpLiquidGreek bromos (stench)bromosFoul-smelling halogennat.chem, nat.bio, hyb.env_sciNonmetalFlame retardants, dyes79,81Br stable1826 Balard
elem.iodineIIodine53HalogenpSolidGreek ioeides (violet-like)ioeidesViolet halogen; thyroid hormonenat.chem, nat.bio, app.medNonmetalAntiseptics, nutrition127I stable1811 Courtois
elem.astatineAtAstatine85HalogenpSolidGreek astatos (unstable)astatosShortest-lived halogennat.chem, nat.physicsNonmetalRadioisotope tracersNo stable isotopes1940 Corson/MacKenzie/Segrè
elem.tennessineTsTennessine117HalogenpSolidTennessee (USA)tennessineSuperheavy halogen; predictednat.chem, nat.physicsNonmetalResearch onlyNo stable isotopes2010 JINR/ORNL

Noble Gases

Group 18 inert gases; closed shells; lighting, shielding, cryogenics.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.heliumHeHelium2Noble gassGasGreek helios (sun)heliosInert archetype; cryogenicsnat.chem, nat.physics, nat.astro, app.engNonmetalBalloons, cryogenics3He, 4He stable1868 Janssen/Lockyer
elem.neonNeNeon10Noble gaspGasGreek neos (new)neosLighting gas; inertnat.chem, nat.physics, nat.astro, app.engNonmetalNeon lights, indicators20,21,22Ne stable1898 Ramsay/Travers
elem.argonArArgon18Noble gaspGasGreek argos (idle)argosAtmospheric noble gasnat.chem, nat.physics, nat.astroNonmetalShielding, lighting36,38,40Ar stable1894 Ramsay/Strutt
elem.kryptonKrKrypton36Noble gaspGasGreek kryptos (hidden)kryptosHidden gas; lightingnat.chem, nat.physicsNonmetalLighting, lasers78,80,82,83,84,86Kr stable1898 Ramsay/Travers
elem.xenonXeXenon54Noble gaspGasGreek xenos (strange)xenosHeavy noble gas; anesthesianat.chem, nat.physics, nat.medNonmetalLamps, ion propulsion, anesthesia124–136Xe stable1898 Ramsay/Travers
elem.radonRnRadon86Noble gaspGasFrom radium + -onradiumRadioactive noble gasnat.chem, nat.physics, app.medNonmetalRadiotherapy, tracerNo stable isotopes1900 Dorn
elem.oganessonOgOganesson118Noble gaspSolid (predicted)Named after Yuri OganessianoganesSuperheavy noble gas (unstable)nat.chem, nat.physicsNonmetalResearch onlyNo stable isotopes2002 JINR/LLNL

Lanthanides

4f rare earths; magnetic, optical, phosphors, catalysts.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.lanthanumLaLanthanum57LanthanidefSolidGreek lanthanein (to lie hidden)lanthaneinHidden metal; prototype of lanthanidesnat.chem, app.engMetalOptical lenses, catalysts138–139La stable1839 Mosander
elem.ceriumCeCerium58LanthanidefSolidNamed after asteroid CeresceresBright element, abundantnat.chem, app.engMetalCatalysts, lighter flints136,138,140,142Ce stable1803 Hisinger/Klaproth
elem.praseodymiumPrPraseodymium59LanthanidefSolidGreek prasios didymos (green twin)prasio+didymosGreen-colored rare earthnat.chem, hyb.materialsMetalMagnets, glasses141Pr stable1885 von Welsbach
elem.neodymiumNdNeodymium60LanthanidefSolidGreek neos didymos (new twin)neos+didymosMagnet powerhousenat.chem, hyb.materialsMetalNdFeB magnets142–150Nd stable1885 von Welsbach
elem.promethiumPmPromethium61LanthanidefSolidNamed after PrometheusprometheusFire-bringer; only radioactive rare earthnat.chem, nat.physicsMetalNuclear batteriesNo stable isotopes1945 (Oak Ridge)
elem.samariumSmSamarium62LanthanidefSolidFrom samarskite mineralsamarskiteStrong magnets; opticsnat.chem, hyb.materialsMetalSamarium–cobalt magnets144,147,148,149,150,152,154Sm stable1879 Lecoq
elem.europiumEuEuropium63LanthanidefSolidNamed after EuropeeuropaPhosphor element; red emissionnat.chem, hyb.materialsMetalPhosphors, euro notes151,153Eu stable1901 Demarçay
elem.gadoliniumGdGadolinium64LanthanidefSolidJohan GadolingadolinMRI contrast, magnetsnat.chem, hyb.materialsMetalMRI agents, alloys152,154–160Gd stable1880 Marignac
elem.terbiumTbTerbium65LanthanidefSolidYtterby, SwedenytterbyGreen phosphor elementnat.chem, hyb.materialsMetalPhosphors, lasers159Tb stable1843 Mosander
elem.dysprosiumDyDysprosium66LanthanidefSolidGreek dysprositos (hard to get)dysprositosHigh magnetic strengthnat.chem, hyb.materialsMetalMagnets, reactors156–164Dy stable1886 Lecoq
elem.holmiumHoHolmium67LanthanidefSolidHolmia (Stockholm)holmiaMagnetic resonance elementnat.chem, hyb.materialsMetalLasers, magnets165Ho stable1878 Per Teodor Cleve
elem.erbiumErErbium68LanthanidefSolidYtterby, SwedenytterbyTelecom optical amplifiernat.chem, hyb.materialsMetalFiber optics162,164,166–170Er stable1842 Mosander
elem.thuliumTmThulium69LanthanidefSolidThule (mythic north)thuleRarest stable lanthanidenat.chem, hyb.materialsMetalPortable X-ray sources169Tm stable1879 Cleve
elem.ytterbiumYbYtterbium70LanthanidefSolidYtterby, SwedenytterbyMultipurpose rare earthnat.chem, hyb.materialsMetalLasers, alloys168–176Yb stable1878 Marignac
elem.lutetiumLuLutetium71LanthanidefSolidLutetia (Paris)lutetiaEnd of lanthanidesnat.chem, hyb.materialsMetalCatalysts, PET scanning175Lu stable1907 Urbain

Actinides

5f elements; radioactivity, nuclear fuels, and synthetic superheavies.

IDSymbolNameZCategoryBlockStateEtymologyMorphemesSemantic RoleFieldsClassFunctionNuclear RefDiscovery
elem.actiniumAcActinium89ActinidefSolidGreek aktis (ray)aktisFirst of actinides; glowingnat.chem, nat.physicsMetalResearch, tracerNo stable isotopes1899 Debierne
elem.thoriumThThorium90ActinidefSolidNorse god ThorthorFertile fuel (232Th)nat.chem, nat.physics, app.engMetalThorium reactors, mantles232Th long-lived1829 Berzelius
elem.protactiniumPaProtactinium91ActinidefSolidGreek protos (before) + actiniumprotos+aktisPrecursor to actiniumnat.chem, nat.physicsMetalNuclear research231Pa long-lived1913 Hahn/Meitner
elem.uraniumUUranium92ActinidefSolidUranus (planet)uranusPrimary fissile elementnat.chem, nat.physics, app.engMetalReactors, weapons235U fissile; 238U fertile1789 Klaproth
elem.neptuniumNpNeptunium93ActinidefSolidNeptune (planet)neptuneFirst transuranicnat.chem, nat.physicsMetalNuclear researchNo stable isotopes1940 McMillan/Abelson
elem.plutoniumPuPlutonium94ActinidefSolidPluto (planet)plutoIconic fissile, weapons fuelnat.chem, nat.physicsMetalReactors, weapons239Pu fissile1940 Seaborg
elem.americiumAmAmericium95ActinidefSolidAmericaamericaSynthetic; detector isotopenat.chem, nat.physics, app.engMetalSmoke detectors, research241Am α emitter1944 Seaborg
elem.curiumCmCurium96ActinidefSolidMarie & Pierre CuriecurieRadioactive namesakenat.chem, nat.physicsMetalResearch, α source244Cm etc.1944 Seaborg
elem.berkeliumBkBerkelium97ActinidefSolidBerkeley, CaliforniaberkeleySynthetic research elementnat.chem, nat.physicsMetalResearch onlyNo stable isotopes1949 Seaborg
elem.californiumCfCalifornium98ActinidefSolidCaliforniacaliforniaNeutron emitternat.chem, nat.physicsMetalReactor startup, neutron source252Cf1950 Seaborg
elem.einsteiniumEsEinsteinium99ActinidefSolidAlbert EinsteineinsteinNamed after physicistnat.chem, nat.physicsMetalResearch onlyNo stable isotopes1952 (H-bomb debris)
elem.fermiumFmFermium100ActinidefSolidEnrico FermifermiSynthetic actinidenat.chem, nat.physicsMetalResearch onlyNo stable isotopes1952 (H-bomb debris)
elem.mendeleviumMdMendelevium101ActinidefSolidDmitri MendeleevmendeleevTable namesakenat.chem, nat.physicsMetalResearch onlyNo stable isotopes1955 Seaborg
elem.nobeliumNoNobelium102ActinidefSolidAlfred NobelnobelSynthetic; namesake of prizesnat.chem, nat.physicsMetalResearch onlyNo stable isotopes1958 JINR
elem.lawrenciumLrLawrencium103ActinidefSolidErnest LawrencelawrenceEnd of actinides; syntheticnat.chem, nat.physicsMetalResearch onlyNo stable isotopes1961 Ghiorso

118 elements across:

  • Alkali metals
  • Alkaline earth metals
  • Transition metals
  • Post-transition metals
  • Metalloids
  • Reactive nonmetals
  • Halogens
  • Noble gases
  • Lanthanides
  • Actinides

Codex Harmonic Transduction Protocol (CHTP) – SolveForce Communications


UCLS Logarithms Mini-Catalog – SolveForce Communications


UCLS Logarithms & Interdisciplinary Catalog – SolveForce Communications


Unified Science Coherence Map — Nodes Table – SolveForce Communications


UCLS Algorithm Catalog – SolveForce Communications


UCLS Sector Matrix — Everything‑as‑a‑Service Directory (Expanded Edition) – SolveForce Communications


UCLS Sector Matrix — Everything-as-a-Service Directory – SolveForce Communications


UCLS Sector Matrix – SolveForce Communications


UCLS Taxonomy Directory Matrix – SolveForce Communications


Unified Categorical Language System – SolveForce Communications


Key terms in plain language

Open a term for a concise explanation of language used on this page.

VoIP

Voice over Internet Protocol carries phone calls over an IP network instead of a traditional analog phone line. Call quality depends on network stability, latency, and traffic management.

Unified Communications (UCaaS)

A cloud-based combination of business calling, messaging, meetings, presence, and collaboration tools managed as one communications service.

SIP Trunking

A service that connects a business phone system to the public telephone network using Internet Protocol, replacing or supplementing traditional phone lines.

Bandwidth

The amount of data a connection can carry in a given time, usually measured in Mbps or Gbps. More bandwidth supports more users, devices, and simultaneous applications.

Latency

The time it takes data to travel between two points. Lower latency improves voice, video meetings, cloud applications, gaming, and other real-time services.

Service-Level Agreement (SLA)

A provider’s written commitment covering service targets such as availability, response time, repair time, and sometimes financial credits when commitments are missed.