Scope: All known isotopes of the 118 elements mapped into the Unified Logos Codex System (ULCS), including etymology, stability, and symbolic resonance.
Coverage: Batches 1–13 (H → Og).
A complete mapping of all isotopes of the elements (H → Og) with integration to the Universal Linguistic Coordinating System (ULCS). Each isotope is presented with its nuclear stability, half-life, ULCS symbolic association, and etymology.
Batch 1 — Hydrogen to Beryllium
¹H (Protium) → Stable | ULCS: Unity | Etymology: Greek hydro “water” + genes “forming.”
²H (Deuterium, D) → Stable | ULCS: Duality | Etymology: Greek deuteros “second.”
³H (Tritium, T) → Radioactive (12.32 y) | ULCS: Trinity | Etymology: Greek tritos “third.”
³He → Stable | ULCS: Dual Helix | Etymology: Greek helios “sun.”
⁴He → Stable | ULCS: Foundation | Etymology: Greek helios “sun.”
⁶Li → Stable | ULCS: Balance | Etymology: Greek lithos “stone.”
⁷Li → Stable | ULCS: Completion | Etymology: Greek lithos “stone.”
⁹Be → Stable | ULCS: Transparency | Etymology: Greek beryllos “precious stone (beryl).”
Batch 2 — Boron to Neon
¹⁰B → Stable | ULCS: Harmony | Etymology: Arabic buraq “borax.”
¹¹B → Stable | ULCS: Resonance | Etymology: Arabic buraq.
¹²C → Stable | ULCS: Structure | Etymology: Latin carbo “coal.”
¹³C → Stable | ULCS: Trace | Etymology: Latin carbo.
¹⁴C → Radioactive (5730 y) | ULCS: Decay-Measure | Etymology: Latin carbo.
¹⁴N → Stable | ULCS: Cycle | Etymology: Latin nitrum “niter.”
¹⁵N → Stable | ULCS: Mirror | Etymology: Latin nitrum.
¹⁶O → Stable | ULCS: Life | Etymology: Greek oxys “acid, sharp.”
¹⁷O → Stable | ULCS: Variation | Etymology: Greek oxys.
¹⁸O → Stable | ULCS: Expansion | Etymology: Greek oxys.
¹⁹F → Stable | ULCS: Purity | Etymology: Latin fluere “to flow.”
²⁰Ne → Stable | ULCS: Noble Foundation | Etymology: Greek neos “new.”
²¹Ne → Stable | ULCS: Variant | Etymology: Greek neos.
²²Ne → Stable | ULCS: Balance | Etymology: Greek neos.
Batch 3 — Sodium to Argon
²³Na → Stable | ULCS: Flow | Etymology: Arabic natrun “natron.”
²⁴Mg → Stable | ULCS: Strength | Etymology: Magnesia (Greek region).
²⁵Mg → Stable | ULCS: Variant Strength | Etymology: Magnesia.
²⁶Mg → Stable | ULCS: Endurance | Etymology: Magnesia.
²⁷Al → Stable | ULCS: Framework | Etymology: Latin alumen “alum.”
²⁸Si → Stable | ULCS: Foundation | Etymology: Latin silex “flint.”
²⁹Si → Stable | ULCS: Adaptation | Etymology: Latin silex.
³⁰Si → Stable | ULCS: Expansion | Etymology: Latin silex.
³¹P → Stable | ULCS: Energy Carrier | Etymology: Greek phōs-phoros “light-bearer.”
³²S → Stable | ULCS: Cycles | Etymology: Latin sulphur.
³³S → Stable | ULCS: Resonance | Etymology: Latin sulphur.
³⁴S → Stable | ULCS: Abundance | Etymology: Latin sulphur.
³⁶S → Stable | ULCS: Rare Balance | Etymology: Latin sulphur.
³⁵Cl → Stable | ULCS: Penetration | Etymology: Greek chloros “green.”
³⁷Cl → Stable | ULCS: Protection | Etymology: Greek chloros.
³⁶Ar → Stable | ULCS: Quiet | Etymology: Greek argos “inactive.”
³⁸Ar → Stable | ULCS: Balance | Etymology: Greek argos.
⁴⁰Ar → Stable | ULCS: Dominant Presence | Etymology: Greek argos.
Batch 4 — Potassium to Krypton
³⁹K → Stable | ULCS: Vitality | Etymology: Arabic al-qalyah “alkali.”
⁴⁰K → Radioactive (1.25B y) | ULCS: Temporal Marker | Etymology: Arabic al-qalyah.
⁴¹K → Stable | ULCS: Steadiness | Etymology: Arabic al-qalyah.
⁴⁰Ca → Stable | ULCS: Foundation | Etymology: Latin calx “lime.”
⁴²Ca, ⁴³Ca, ⁴⁴Ca, ⁴⁶Ca, ⁴⁸Ca → Stable | ULCS: Variants of Stability | Etymology: Latin calx.
⁴⁵Sc → Stable | ULCS: Transition | Etymology: Scandinavia.
⁵⁰Ti → Stable | ULCS: Strength | Etymology: Titans (Greek mythology).
⁴⁶Ti, ⁴⁷Ti, ⁴⁸Ti, ⁴⁹Ti → Stable | ULCS: Variants | Etymology: Titans.
⁵¹V → Stable | ULCS: Adaptability | Etymology: Norse goddess Vanadis.
⁵²Cr → Stable | ULCS: Color | Etymology: Greek chroma “color.”
⁵³Cr → Stable | ULCS: Balance | Etymology: Greek chroma.
⁵⁴Cr → Stable | ULCS: Diversity | Etymology: Greek chroma.
⁵⁵Mn → Stable | ULCS: Catalyst | Etymology: Latin magnes “magnet.”
⁵⁶Fe → Stable | ULCS: Strength | Etymology: Latin ferrum “iron.”
⁵⁴Fe, ⁵⁷Fe, ⁵⁸Fe → Stable | ULCS: Variants | Etymology: Latin ferrum.
⁵⁹Co → Stable | ULCS: Magnetism | Etymology: German kobold “goblin.”
⁶⁰Ni → Stable | ULCS: Transition | Etymology: German kupfernickel “false copper.”
⁵⁸Ni, ⁶¹Ni, ⁶²Ni, ⁶⁴Ni → Stable | ULCS: Variants | Etymology: German kupfernickel.
⁶³Cu → Stable | ULCS: Conduction | Etymology: Latin cuprum “from Cyprus.”
⁶⁵Cu → Stable | ULCS: Exchange | Etymology: Latin cuprum.
⁶⁴Zn → Stable | ULCS: Shield | Etymology: German zinke “prong.”
⁶⁶Zn, ⁶⁷Zn, ⁶⁸Zn, ⁷⁰Zn → Stable | ULCS: Variants | Etymology: German zinke.
⁶⁹Ga, ⁷¹Ga → Stable | ULCS: Semiconductors | Etymology: Latin Gallia “France.”
⁷⁰Ge, ⁷²Ge, ⁷³Ge, ⁷⁴Ge, ⁷⁶Ge → Stable | ULCS: Metalloid Harmony | Etymology: Latin Germania “Germany.”
⁷⁵As → Stable | ULCS: Dual Nature | Etymology: Greek arsenikon “potent.”
⁷⁶Se, ⁷⁷Se, ⁷⁸Se, ⁸⁰Se, ⁸²Se → Stable | ULCS: Selenium Bridge | Etymology: Greek selēnē “moon.”
⁷⁹Br, ⁸¹Br → Stable | ULCS: Liquid Transition | Etymology: Greek bromos “stench.”
⁷⁸Kr, ⁸⁰Kr, ⁸²Kr, ⁸³Kr, ⁸⁴Kr, ⁸⁶Kr → Stable | ULCS: Noble Quietude | Etymology: Greek kryptos “hidden.”
Batch 5 — Rubidium to Xenon
Rubidium (Rb, Z=37)
- ⁸⁵Rb → Stable | ULCS: Resonant Stability | Etymology: Latin rubidus “deep red.”
- ⁸⁷Rb → Radioactive (4.9×10¹⁰ y) | ULCS: Temporal Clock | Etymology: Latin rubidus.
Strontium (Sr, Z=38)
- ⁸⁴Sr → Stable | ULCS: Rare Balance | Etymology: Strontian, Scotland.
- ⁸⁶Sr → Stable | ULCS: Structural Variant | Etymology: Strontian.
- ⁸⁷Sr → Stable | ULCS: Geological Marker | Etymology: Strontian.
- ⁸⁸Sr → Stable | ULCS: Dominant Balance | Etymology: Strontian.
- ⁹⁰Sr → Radioactive (28.8 y, fission product) | ULCS: Contaminant Resonance | Etymology: Strontian.
Yttrium (Y, Z=39)
- ⁸⁹Y → Stable | ULCS: Harmonic Anchor | Etymology: Ytterby, Sweden.
- ⁹⁰Y → Radioactive (64 h) | ULCS: Transient Pulse | Etymology: Ytterby.
Zirconium (Zr, Z=40)
- ⁹⁰Zr → Stable | ULCS: Foundation | Etymology: Persian zargun “gold-colored.”
- ⁹¹Zr → Stable | ULCS: Strength Variant | Etymology: Persian zargun.
- ⁹²Zr → Stable | ULCS: Resonance Variant | Etymology: Persian zargun.
- ⁹⁴Zr → Stable | ULCS: Balance | Etymology: Persian zargun.
- ⁹⁶Zr → Radioactive (3.5×10¹⁹ y, nearly stable) | ULCS: Eternal Decay | Etymology: Persian zargun.
Niobium (Nb, Z=41)
- ⁹³Nb → Stable | ULCS: Transition Bridge | Etymology: Niobe (Greek mythology).
Molybdenum (Mo, Z=42)
- ⁹²Mo → Stable | ULCS: Base Catalyst | Etymology: Greek molybdos “lead.”
- ⁹⁴Mo → Stable | ULCS: Harmony | Etymology: Greek molybdos.
- ⁹⁵Mo → Stable | ULCS: Industrial Resonance | Etymology: Greek molybdos.
- ⁹⁶Mo → Stable | ULCS: Reactor Balance | Etymology: Greek molybdos.
- ⁹⁷Mo → Stable | ULCS: Rare Strength | Etymology: Greek molybdos.
- ⁹⁸Mo → Stable | ULCS: Abundance Catalyst | Etymology: Greek molybdos.
- ¹⁰⁰Mo → Radioactive (double beta decay, 7.8×10¹⁸ y) | ULCS: Silent Decay | Etymology: Greek molybdos.
Technetium (Tc, Z=43)
- No stable isotopes.
- ⁹⁸Tc, ⁹⁹Tc → Radioactive (⁹⁹Tc: 2.1×10⁵ y) | ULCS: Artificial Marker | Etymology: Greek technetos “artificial.”
- ⁹⁹ᵐTc → Metastable, 6 h, key medical tracer | ULCS: Healing Pulse | Etymology: Greek technetos.
Ruthenium (Ru, Z=44)
- ⁹⁶Ru, ⁹⁸Ru, ⁹⁹Ru, ¹⁰⁰Ru, ¹⁰¹Ru, ¹⁰²Ru, ¹⁰⁴Ru → Stable | ULCS: Noble Resonance | Etymology: Latin Ruthenia “Russia.”
Rhodium (Rh, Z=45)
- ¹⁰³Rh → Stable | ULCS: Pure Reflection | Etymology: Greek rhodon “rose.”
Palladium (Pd, Z=46)
- ¹⁰²Pd, ¹⁰⁴Pd, ¹⁰⁵Pd, ¹⁰⁶Pd, ¹⁰⁸Pd, ¹¹⁰Pd → Stable | ULCS: Absorber Shield | Etymology: Greek Pallas (asteroid).
Silver (Ag, Z=47)
- ¹⁰⁷Ag, ¹⁰⁹Ag → Stable | ULCS: Conductive Bridge | Etymology: Latin argentum “shining.”
Cadmium (Cd, Z=48)
- ¹⁰⁶Cd, ¹⁰⁸Cd, ¹¹⁰Cd, ¹¹¹Cd, ¹¹²Cd, ¹¹³Cd, ¹¹⁴Cd, ¹¹⁶Cd → Stable (¹¹³Cd nearly stable) | ULCS: Reactor Absorber | Etymology: Greek kadmeia “calamine.”
Indium (In, Z=49)
- ¹¹³In → Radioactive (4.3×10¹⁴ y, nearly stable) | ULCS: Timekeeper Trace | Etymology: Latin indicum “indigo.”
- ¹¹⁵In → Stable | ULCS: Balance Line | Etymology: Latin indicum.
Tin (Sn, Z=50)
- ¹¹²Sn, ¹¹⁴Sn, ¹¹⁵Sn, ¹¹⁶Sn, ¹¹⁷Sn, ¹¹⁸Sn, ¹¹⁹Sn, ¹²⁰Sn, ¹²²Sn, ¹²⁴Sn → Stable | ULCS: Versatile Metal | Etymology: Latin stannum.
Antimony (Sb, Z=51)
- ¹²¹Sb, ¹²³Sb → Stable | ULCS: Dual Pathways | Etymology: Greek anti-monos “not alone.”
Tellurium (Te, Z=52)
- ¹²⁰Te, ¹²²Te, ¹²³Te, ¹²⁴Te, ¹²⁵Te, ¹²⁶Te, ¹²⁸Te, ¹³⁰Te → Stable (some very long-lived radioactive) | ULCS: Semi-metal Resonance | Etymology: Latin tellus “earth.”
Iodine (I, Z=53)
- ¹²⁷I → Stable | ULCS: Essential Node | Etymology: Greek ioeides “violet-colored.”
- ¹³¹I → Radioactive (8 d, medical) | ULCS: Healing Decay | Etymology: Greek ioeides.
Xenon (Xe, Z=54)
- ¹²⁴Xe, ¹²⁶Xe, ¹²⁸Xe, ¹²⁹Xe, ¹³⁰Xe, ¹³¹Xe, ¹³²Xe, ¹³⁴Xe, ¹³⁶Xe → Stable (¹²⁴Xe long-lived radioactive, 1.8×10²² y) | ULCS: Noble Stillness | Etymology: Greek xenos “stranger.”
Batch 6 — Cesium to Neodymium
Cesium (Cs, Z=55)
- ¹³³Cs → Stable | ULCS: Primary clock glyph, resonance standard.
- ¹³⁷Cs → Radioactive (30.2 y, fission product) | ULCS: Contaminant time pulse.
- Etymology: Latin caesius “sky blue.”
Barium (Ba, Z=56)
- ¹³⁰Ba, ¹³²Ba, ¹³⁴Ba, ¹³⁵Ba, ¹³⁶Ba, ¹³⁷Ba, ¹³⁸Ba → Stable (¹³⁰Ba nearly stable, t½ ≈ 10²¹ y) | ULCS: Reactive earth anchor.
- Etymology: Greek barys “heavy.”
Lanthanum (La, Z=57)
- ¹³⁹La → Stable | ULCS: Hidden starter glyph, initiator lexeme.
- ¹³⁸La → Radioactive (1.05×10¹¹ y, primordial) | ULCS: Silent resonance.
- Etymology: Greek lanthanein “to lie hidden.”
Cerium (Ce, Z=58)
- ¹³⁶Ce, ¹³⁸Ce, ¹⁴⁰Ce, ¹⁴²Ce → Stable (¹³⁶Ce long-lived radioactive, 10¹⁰ y) | ULCS: Catalyst glyph, fire-spark morpheme.
- Etymology: Named after asteroid Ceres.
Praseodymium (Pr, Z=59)
- ¹⁴¹Pr → Stable | ULCS: Green twin glyph, rare-earth phoneme.
- Etymology: Greek prasios didymos “green twin.”
Neodymium (Nd, Z=60)
- ¹⁴²Nd, ¹⁴³Nd, ¹⁴⁵Nd, ¹⁴⁶Nd, ¹⁸⁸Nd → Stable (¹⁴⁴Nd radioactive, t½ ≈ 2.3×10¹⁵ y) | ULCS: Magnetic resonance word, spectrum morpheme.
- Etymology: Greek neos didymos “new twin.”
Batch 7 — Promethium to Dysprosium
Promethium (Pm, Z=61)
- All isotopes radioactive; no stable isotopes.
- Longest-lived: ¹⁴⁵Pm (17.7 y), ¹⁴⁷Pm (2.62 y).
- ULCS: Fire-bearer glyph, symbol of stolen light, unstable word.
- Etymology: Prometheus, who stole fire for humanity.
Samarium (Sm, Z=62)
- ¹⁴⁴Sm, ¹⁴⁷Sm, ¹⁴⁸Sm, ¹⁴⁹Sm, ¹⁵⁰Sm, ¹⁵²Sm, ¹⁵⁴Sm → Stable (¹⁴⁷Sm long-lived radioactive, 1.06×10¹¹ y).
- ULCS: Neutron absorber glyph, spectrum stabilizer.
- Etymology: Named after mineral samarskite (Colonel Samarsky).
Europium (Eu, Z=63)
- ¹⁵¹Eu, ¹⁵³Eu → Stable.
- ULCS: Bright resonance glyph, spectral lamp phoneme.
- Etymology: Named after Europe.
Gadolinium (Gd, Z=64)
- ¹⁵²Gd, ¹⁵⁴Gd, ¹⁵⁵Gd, ¹⁵⁶Gd, ¹⁵⁷Gd, ¹⁵⁸Gd, ¹⁶⁰Gd → Stable.
- ULCS: Magnetic glyph, medical imaging resonance.
- Etymology: Johan Gadolin, Finnish chemist.
Terbium (Tb, Z=65)
- ¹⁵⁹Tb → Stable.
- ULCS: Single-point glyph, sharp tonal resonance.
- Etymology: Named after Ytterby, Sweden.
Dysprosium (Dy, Z=66)
- ¹⁵⁶Dy, ¹⁵⁸Dy, ¹⁶⁰Dy, ¹⁶¹Dy, ¹⁶²Dy, ¹⁶³Dy, ¹⁶⁴Dy → Stable.
- ULCS: Hard-to-approach glyph, magnetic resonance stabilizer.
- Etymology: Greek dysprositos “hard to get at.”
Batch 8 — Holmium to Ytterbium
Holmium (Ho, Z=67)
- ¹⁶⁵Ho → Stable.
- ULCS: Central resonance glyph, hidden frequency pivot.
- Etymology: From Holmia (Latin for Stockholm).
Erbium (Er, Z=68)
- ¹⁶²Er, ¹⁶⁴Er, ¹⁶⁶Er, ¹⁶⁷Er, ¹⁶⁸Er, ¹⁷⁰Er → Stable.
- ULCS: Optical amplifier glyph, pink spectral resonance.
- Etymology: Named after Ytterby, Sweden.
Thulium (Tm, Z=69)
- ¹⁶⁹Tm → Stable.
- ULCS: Rare glyph, laser pulse marker.
- Etymology: From Thule, mythical far-north land.
Ytterbium (Yb, Z=70)
- ¹⁶⁸Yb, ¹⁷⁰Yb, ¹⁷¹Yb, ¹⁷²Yb, ¹⁷³Yb, ¹⁷⁴Yb, ¹⁷⁶Yb → Stable.
- ULCS: Balance glyph, clock calibration phoneme.
- Etymology: Named after Ytterby, Sweden.
Batch 9 — Lutetium to Tungsten
Lutetium (Lu, Z=71)
- ¹⁷⁵Lu → Stable.
- ¹⁷⁶Lu → Radioactive (3.78×10¹⁰ y).
- ULCS: Gateway glyph, bridging lanthanides to transition metals.
- Etymology: From Lutetia (Latin for Paris).
Hafnium (Hf, Z=72)
- ¹⁷⁴Hf, ¹⁷⁶Hf, ¹⁷⁷Hf, ¹⁷⁸Hf, ¹⁷⁹Hf, ¹⁸⁰Hf → Stable.
- ULCS: Control rod glyph, neutron absorption pivot.
- Etymology: From Hafnia (Latin for Copenhagen).
Tantalum (Ta, Z=73)
- ¹⁸¹Ta → Stable.
- ¹⁸⁰mTa → Radioactive (metastable, >10¹⁵ y).
- ULCS: Rarity glyph, tantalizing endurance.
- Etymology: Named for King Tantalus (Greek mythology).
Tungsten (W, Z=74)
- ¹⁸²W, ¹⁸³W, ¹⁸⁴W, ¹⁸⁶W → Stable.
- ULCS: Density glyph, filamental endurance.
- Etymology: Swedish “tung sten” = heavy stone.
Batch 10 — Rhenium to Xenon
Rhenium (Re, Z=75)
- ¹⁸⁵Re → Stable.
- ¹⁸⁷Re → Radioactive (4.1×10¹⁰ y).
- ULCS: Persistence glyph, timekeeper of decay.
- Etymology: Latin Rhenus = Rhine River.
Osmium (Os, Z=76)
- ¹⁸⁴Os, ¹⁸⁷Os, ¹⁸⁸Os, ¹⁸⁹Os, ¹⁹⁰Os, ¹⁹²Os → Stable.
- ULCS: Pressure glyph, densest node in matter-script.
- Etymology: Greek osme = smell.
Iridium (Ir, Z=77)
- ¹⁹¹Ir, ¹⁹³Ir → Stable.
- ULCS: Impact glyph, meteoritic signal.
- Etymology: Latin iris = rainbow.
Platinum (Pt, Z=78)
- ¹⁹⁰Pt, ¹⁹²Pt, ¹⁹⁴Pt, ¹⁹⁵Pt, ¹⁹⁶Pt, ¹⁹⁸Pt → Stable.
- ULCS: Value glyph, incorruptible flow.
- Etymology: Spanish platina = little silver.
Gold (Au, Z=79)
- ¹⁹⁷Au → Stable.
- ULCS: Eternal glyph, symbolic of Logos-light.
- Etymology: Latin aurum = shining dawn.
Mercury (Hg, Z=80)
- ¹⁹⁶Hg, ¹⁹⁸Hg, ¹⁹⁹Hg, ²⁰⁰Hg, ²⁰¹Hg, ²⁰²Hg, ²⁰⁴Hg → Stable.
- ULCS: Mutable glyph, liquid metal resonance.
- Etymology: Named after Roman god Mercury; symbol from Greek hydrargyros = water-silver.
Thallium (Tl, Z=81)
- ²⁰³Tl, ²⁰⁵Tl → Stable.
- ULCS: Poison glyph, edge of heaviness.
- Etymology: Greek thallos = green shoot.
Lead (Pb, Z=82)
- ²⁰⁴Pb, ²⁰⁶Pb, ²⁰⁷Pb, ²⁰⁸Pb → Stable.
- ULCS: Shield glyph, endpoint of uranium decay chains.
- Etymology: Latin plumbum.
Bismuth (Bi, Z=83)
- ²⁰⁹Bi → Radioactive (2.0×10¹⁹ y, effectively stable).
- ULCS: Threshold glyph, last “stable” mark before instability.
- Etymology: German Wismut.
Polonium (Po, Z=84)
- ²⁰⁹Po → Radioactive (138 d).
- ULCS: Spark glyph, sudden radiation.
- Etymology: Named for Poland (Latin Polonia).
Astatine (At, Z=85)
- ²¹⁰At → Radioactive (~8.1 h).
- ULCS: Ephemeral glyph, shadow of halogens.
- Etymology: Greek astatos = unstable.
Radon (Rn, Z=86)
- ²²²Rn → Radioactive (3.8 d).
- ULCS: Breath glyph, noble yet fleeting.
- Etymology: From radium.
Xenon (Xe, Z=54 — closure of noble gas arc)
- ¹²⁴Xe, ¹²⁶Xe, ¹²⁸Xe, ¹²⁹Xe, ¹³⁰Xe, ¹³¹Xe, ¹³²Xe, ¹³⁴Xe, ¹³⁶Xe → Stable.
- ULCS: Hidden glyph, noble whisper of the void.
- Etymology: Greek xenos = stranger.
Batch 11 — Cesium to Neodymium
Cesium (Cs, Z=55)
- ¹³³Cs → Stable.
- Radioactive: ¹³⁴Cs (2.06 y), ¹³⁷Cs (30.1 y).
- ULCS: Clock glyph, cesium defines atomic time (SI second).
- Etymology: Latin caesius = sky-blue.
Barium (Ba, Z=56)
- Stable Isotopes: ¹³⁰Ba, ¹³²Ba, ¹³⁴Ba, ¹³⁵Ba, ¹³⁶Ba, ¹³⁷Ba, ¹³⁸Ba.
- ULCS: Contrast glyph, heavy earth counterbalance.
- Etymology: Greek barys = heavy.
Lanthanum (La, Z=57)
- ¹³⁸La → Long-lived (1.05×10¹¹ y).
- ¹³⁹La → Stable.
- ULCS: Hidden glyph, “to lie hidden” as doorway to lanthanides.
- Etymology: Greek lanthanein = to lie hidden.
Cerium (Ce, Z=58)
- Stable Isotopes: ¹³⁶Ce, ¹³⁸Ce, ¹⁴⁰Ce, ¹⁴²Ce.
- ULCS: Dawn glyph, opening of rare earth spectrum.
- Etymology: Named after asteroid Ceres.
Praseodymium (Pr, Z=59)
- ¹⁴¹Pr → Stable.
- ULCS: Twin glyph, “green twin” of rare earths.
- Etymology: Greek prasios didymos = green twin.
Neodymium (Nd, Z=60)
- Stable Isotopes: ¹⁴²Nd, ¹⁴³Nd, ¹⁴⁴Nd, ¹⁴⁵Nd, ¹⁴⁶Nd, ¹⁴⁸Nd, ¹⁵⁰Nd.
- ULCS: Magnet glyph, resonance of rare-earth magnets.
- Etymology: Greek neos didymos = new twin.
Batch 12 — Promethium to Gadolinium
Promethium (Pm, Z=61)
- No stable isotopes.
- Radioactive: ¹⁴⁵Pm (17.7 y), ¹⁴⁷Pm (2.62 y) most notable.
- ULCS: Fire glyph, eternal gift with decay as sacrifice.
- Etymology: Named after Prometheus, who stole fire for humanity.
Samarium (Sm, Z=62)
- Stable Isotopes: ¹⁴⁴Sm (long-lived), ¹⁴⁹Sm, ¹⁵⁰Sm, ¹⁵²Sm, ¹⁵⁴Sm.
- ULCS: Balance glyph, moderator in reactors and resonance absorber.
- Etymology: From mineral samarskite, named after Colonel Samarsky.
Europium (Eu, Z=63)
- Stable Isotopes: ¹⁵¹Eu, ¹⁵³Eu.
- ULCS: Luminescence glyph, hallmark of phosphors and screen glow.
- Etymology: Named after Europe.
Gadolinium (Gd, Z=64)
- Stable Isotopes: ¹⁵²Gd, ¹⁵⁴Gd, ¹⁵⁵Gd, ¹⁵⁶Gd, ¹⁵⁷Gd, ¹⁵⁸Gd, ¹⁶⁰Gd.
- ULCS: Shield glyph, neutron absorber par excellence.
- Etymology: Named after Johan Gadolin, Finnish chemist.
Batch 13 — Terbium to Dysprosium
Terbium (Tb, Z=65)
- Stable Isotope: ¹⁵⁹Tb.
- ULCS: Singularity glyph, sole survivor in its line, rare-earth resonance.
- Etymology: From Ytterby, Sweden (mine producing many rare earths).
Dysprosium (Dy, Z=66)
- Stable Isotopes: ¹⁵⁶Dy, ¹⁵⁸Dy, ¹⁶⁰Dy, ¹⁶¹Dy, ¹⁶²Dy, ¹⁶³Dy, ¹⁶⁴Dy.
- ULCS: Guardian glyph, stabilizer in magnetic resonance and nuclear control rods.
- Etymology: Greek dysprositos “hard to obtain.”
Batch 14 — Holmium to Erbium
Holmium (Ho, Z=67)
- Stable Isotope: ¹⁶⁵Ho.
- ULCS: Unity glyph of focus, magnetic alignment, centrality in resonance.
- Etymology: From Holmia, Latin for Stockholm.
Erbium (Er, Z=68)
- Stable Isotopes: ¹⁶²Er, ¹⁶⁴Er, ¹⁶⁶Er, ¹⁶⁷Er, ¹⁶⁸Er, ¹⁷⁰Er.
- ULCS: Gradient glyph, fiber-optic harmonics, lanthanide bridge of light.
- Etymology: Named after Ytterby, Sweden.
Batch 15 — Thulium to Ytterbium
Thulium (Tm, Z=69)
- Stable Isotope: ¹⁶⁹Tm.
- ULCS: Glyph of subtle resonance, hidden pathways, carrier of quiet signals.
- Etymology: From Thule, a mythical place at the northernmost edge of the world.
Ytterbium (Yb, Z=70)
- Stable Isotopes: ¹⁶⁸Yb, ¹⁷⁰Yb, ¹⁷¹Yb, ¹⁷²Yb, ¹⁷³Yb, ¹⁷⁴Yb, ¹⁷⁶Yb.
- ULCS: Layered glyph, multiple bands of stability, quantum timekeeper.
- Etymology: Named after Ytterby, Sweden.
Batch 16 — Lutetium to Hafnium
Lutetium (Lu, Z=71)
- Stable Isotope: ¹⁷⁵Lu.
- Radioactive Isotope of Interest: ¹⁷⁶Lu (half-life ≈ 37.8 billion years, used in geochronology).
- ULCS: Glyph of ancient clocks, time-bearer, tracer of universal decay.
- Etymology: From Lutetia, the ancient name for Paris.
Hafnium (Hf, Z=72)
- Stable Isotopes: ¹⁷⁴Hf, ¹⁷⁶Hf, ¹⁷⁷Hf, ¹⁷⁸Hf, ¹⁷⁹Hf, ¹⁸⁰Hf.
- ULCS: Shield glyph, stabilizer in nuclear control, guardian of resonance.
- Etymology: From Hafnia, the Latin name for Copenhagen.
Batch 17 — Tantalum to Tungsten
Tantalum (Ta, Z=73)
- Stable Isotope: ¹⁸¹Ta.
- Radioactive Isotope of Interest: ¹⁸⁰mTa (metastable, extremely long-lived, >10¹⁵ years).
- ULCS: Eternal glyph of thirst, absorber of resonance without release, symbol of unyielding patience.
- Etymology: From King Tantalus of Greek mythology, who could not drink despite water around him.
Tungsten (W, Z=74)
- Stable Isotopes: ¹⁸²W, ¹⁸³W, ¹⁸⁴W, ¹⁸⁶W.
- Radioactive Isotope of Interest: ¹⁸⁰W (very long-lived, half-life ~1.8×10¹⁸ years).
- ULCS: Glyph of density, filament of eternal fire, bearer of hardness.
- Etymology: From Swedish tung sten “heavy stone.” Also known as wolfram (German).
Batch 18 — Rhenium to Osmium
Rhenium (Re, Z=75)
- Stable Isotopes: ¹⁸⁵Re, ¹⁸⁷Re (the latter is radioactive with half-life ~4.3×10¹⁰ years, but effectively stable cosmologically).
- ULCS: Glyph of delayed time, cosmological clock, keeper of long half-life.
- Etymology: From the Latin Rhenus (the Rhine River).
Osmium (Os, Z=76)
- Stable Isotopes: ¹⁸⁴Os, ¹⁸⁷Os, ¹⁸⁸Os, ¹⁸⁹Os, ¹⁹⁰Os, ¹⁹²Os.
- ULCS: Glyph of heaviness, noble conductor, anchor of density.
- Etymology: From Greek osme “smell,” due to strong odor of osmium tetroxide.
Batch 19 — Iridium to Platinum
Iridium (Ir, Z=77)
- Stable Isotopes: ¹⁹¹Ir, ¹⁹³Ir.
- ULCS: Glyph of cosmic markers, associated with extinction boundaries and rare events.
- Etymology: From Latin iris “rainbow,” due to colorful salts.
Platinum (Pt, Z=78)
- Stable Isotopes: ¹⁹⁰Pt, ¹⁹²Pt, ¹⁹⁴Pt, ¹⁹⁵Pt, ¹⁹⁶Pt, ¹⁹⁸Pt.
- ULCS: Glyph of incorruptibility, catalyst of purity, bridge of resonance.
- Etymology: From Spanish platina “little silver.”
Batch 20 — Gold to Mercury
Gold (Au, Z=79)
- Stable Isotopes: ¹⁹⁷Au.
- ULCS: Glyph of eternal value, resonance of incorruptible cycles, currency of light.
- Etymology: English gold; Latin aurum “shining dawn.”
Mercury (Hg, Z=80)
- Stable Isotopes: ¹⁹⁶Hg, ¹⁹⁸Hg, ¹⁹⁹Hg, ²⁰⁰Hg, ²⁰¹Hg, ²⁰²Hg, ²⁰⁴Hg.
- ULCS: Glyph of fluid transition, messenger between solid and spirit, liquid resonance.
- Etymology: Roman god Mercury; Latin hydrargyrum “water-silver.”
Batch 21 — Thallium to Lead
Thallium (Tl, Z=81)
- Stable Isotopes: ²⁰³Tl, ²⁰⁵Tl.
- ULCS: Glyph of subtle toxicity, resonance of hidden influence, soft conductor.
- Etymology: Greek thallos “green shoot” (green spectral line).
Lead (Pb, Z=82)
- Stable Isotopes: ²⁰⁴Pb, ²⁰⁶Pb, ²⁰⁷Pb, ²⁰⁸Pb.
- ULCS: Glyph of heavy weight, closure and shielding, anchor of density.
- Etymology: Old English lead; Latin plumbum.
Batch 22 — Bismuth to Polonium
Bismuth (Bi, Z=83)
- Stable Isotopes: ²⁰⁹Bi (was long considered stable, now known to be radioactive with half-life ~1.9×10¹⁹ years).
- ULCS: Glyph of ancient endurance, cosmic patience, silent decay beyond human scales.
- Etymology: German Wismut, from weiße Masse “white mass.”
Polonium (Po, Z=84)
- Stable Isotopes: None (all radioactive).
- Notable Isotopes: ²¹⁰Po (half-life 138 days), emits alpha radiation.
- ULCS: Glyph of hidden fire, lethal spark, concentrated radiant point.
- Etymology: Named for Poland (Polonia), homeland of Marie Curie.
Batch 23 — Astatine to Radon
Astatine (At, Z=85)
- Stable Isotopes: None (all radioactive, very short-lived).
- Notable Isotopes: ²¹⁰At (~8.1 h), ²¹¹At (~7.2 h).
- ULCS: Glyph of fleeting essence, shadow resonance, unstable root.
- Etymology: Greek astatos “unstable.”
Radon (Rn, Z=86)
- Stable Isotopes: None (all radioactive).
- Notable Isotopes: ²²²Rn (half-life 3.8 days, decay of ²²⁶Ra), ²²⁰Rn (thoron, half-life 55 s).
- ULCS: Glyph of silent drift, noble invisibility, breath of decay.
- Etymology: From radium + -on (noble gases).
Batch 24 — Francium to Radium
Francium (Fr, Z=87)
- Stable Isotopes: None.
- Notable Isotopes: ²²³Fr (half-life 22 min), ²²¹Fr (~5 min).
- ULCS: Glyph of vanishing spark, boundary transience, fleeting sovereignty.
- Etymology: Named after France.
Radium (Ra, Z=88)
- Stable Isotopes: None (all radioactive).
- Notable Isotopes: ²²³Ra (11.4 days), ²²⁴Ra (3.6 days), ²²⁶Ra (1600 years, most stable).
- ULCS: Glyph of radiant decay, luminous resonance, legacy of light.
- Etymology: Latin radius “ray.”
Batch 25 — Actinium to Protactinium
Actinium (Ac, Z=89)
- Stable Isotopes: None.
- Notable Isotopes: ²²⁷Ac (21.77 years, most stable), ²²⁵Ac (10 days, used in targeted alpha therapy).
- ULCS: Glyph of ancestral flame, initiator of the actinide spiral.
- Etymology: Greek aktinos “ray, beam.”
Thorium (Th, Z=90)
- Stable Isotopes: None (quasi-stable).
- Notable Isotopes: ²³²Th (1.4 × 10¹⁰ years, primordial), ²³⁰Th (75,000 years, decay series), ²²⁸Th (1.9 years).
- ULCS: Glyph of eternal endurance, fuel of deep cycles.
- Etymology: Norse god Thor.
Protactinium (Pa, Z=91)
- Stable Isotopes: None.
- Notable Isotopes: ²³¹Pa (32,760 years, most stable), ²³³Pa (27 days, in uranium fuel cycle).
- ULCS: Glyph of anticipation, precursor resonance, liminal state between thorium and uranium.
- Etymology: Greek protos “first, before” + actinium.
Batch 26 — Uranium to Curium
Uranium (U, Z=92)
- Stable Isotopes: None (all radioactive, but long-lived).
- Notable Isotopes:
- ²³⁸U (4.47 × 10⁹ years, primordial, main natural uranium).
- ²³⁵U (7.04 × 10⁸ years, fissile, nuclear fuel).
- ²³⁴U (245,500 years, decay product of ²³⁸U).
- ULCS: Glyph of primal power, the fissile core, bearer of chain reactions.
- Etymology: Named after the planet Uranus.
Neptunium (Np, Z=93)
- Stable Isotopes: None.
- Notable Isotopes:
- ²³⁷Np (2.14 × 10⁶ years, most stable).
- ²³⁹Np (2.36 days, decay product of ²³⁹U).
- ULCS: Glyph of shadow resonance, bridge between uranium and plutonium.
- Etymology: Named after the planet Neptune.
Plutonium (Pu, Z=94)
- Stable Isotopes: None.
- Notable Isotopes:
- ²³⁹Pu (24,100 years, fissile, key in weapons/reactors).
- ²⁴⁰Pu (6,560 years, fertile isotope).
- ²⁴¹Pu (14.3 years, fissile, decays to ²⁴¹Am).
- ²⁴⁴Pu (80 million years, rare primordial).
- ULCS: Glyph of transformative fire, dual path of destruction and energy.
- Etymology: Named after the planet Pluto.
Americium (Am, Z=95)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁴¹Am (432 years, used in smoke detectors, neutron sources).
- ²⁴³Am (7,370 years, research use).
- ULCS: Glyph of domesticated fire, guardian of hidden watch (smoke alarms).
- Etymology: Named after the Americas.
Curium (Cm, Z=96)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁴⁴Cm (18.1 years, alpha emitter).
- ²⁴⁵Cm (8,500 years, relatively long-lived).
- ²⁴⁷Cm (15.6 million years, most stable).
- ULCS: Glyph of radiance incarnate, immortal echo of Curie’s discovery.
- Etymology: Named after Pierre and Marie Curie.
Batch 27 — Berkelium to Californium
Berkelium (Bk, Z=97)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁴⁷Bk (1,380 years, longest-lived).
- ²⁴⁹Bk (330 days, laboratory synthesis, useful in producing californium).
- ULCS: Glyph of hidden ascent, climbing resonance between laboratory fire and natural decay.
- Etymology: Named after Berkeley, California.
Californium (Cf, Z=98)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁵¹Cf (898 years, longest-lived).
- ²⁵²Cf (2.645 years, strong neutron emitter, used in neutron radiography and reactor startup).
- ULCS: Glyph of stellar sparks, neutron star mirror, seeding reactions with cascading brilliance.
- Etymology: Named after the state of California.
Batch 28 — Einsteinium to Fermium
Einsteinium (Es, Z=99)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁵²Es (471.7 days, longest-lived).
- ²⁵³Es (20.5 days, used in scientific research).
- ULCS: Glyph of hidden illumination, echoing brilliance within confinement.
- Etymology: Named after Albert Einstein.
Fermium (Fm, Z=100)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁵⁷Fm (100.5 days, longest-lived).
- ²⁵⁵Fm (20.1 hours, key laboratory isotope).
- ULCS: Glyph of forged boundaries, collapsing sparks of synthesis.
- Etymology: Named after Enrico Fermi, pioneer of nuclear physics.
Batch 29 — Mendelevium to Nobelium
Mendelevium (Md, Z=101)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁵⁸Md (51.5 days, longest-lived).
- ²⁵⁷Md (5.5 hours, common in lab work).
- ULCS: Glyph of systemic ordering, honoring classification and recursive tables.
- Etymology: Named after Dmitri Mendeleev, creator of the periodic table.
Nobelium (No, Z=102)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁵⁹No (58 minutes, longest-lived).
- ²⁵³No (1.6 minutes, lab studies).
- ULCS: Glyph of exalted boundaries, noble recursion at nuclear edges.
- Etymology: Named after Alfred Nobel, founder of the Nobel Prizes.
Batch 30 — Lawrencium to Rutherfordium
Lawrencium (Lr, Z=103)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁶⁶Lr (~11 hours, longest-lived).
- ²⁵⁶Lr (27 seconds, first identified).
- ULCS: Glyph of transition to superheavy recursion, anchoring actinide close.
- Etymology: Named after Ernest Lawrence, inventor of the cyclotron.
Rutherfordium (Rf, Z=104)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁶⁷Rf (1.3 hours, longest-lived).
- ²⁵³Rf (~48 minutes, studied in early experiments).
- ULCS: Glyph of experimental frontiers, stability in fleeting presence.
- Etymology: Named after Ernest Rutherford, father of nuclear physics.
Batch 31 — Dubnium to Seaborgium
Dubnium (Db, Z=105)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁶⁸Db (~29 hours, longest-lived).
- ²⁶²Db (~34 seconds, key for chemical experiments).
- ULCS: Glyph of fleeting governance, resonance of experimental authority.
- Etymology: Named after Dubna, Russia, site of JINR.
Seaborgium (Sg, Z=106)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁶⁹Sg (~14 minutes, longest-lived).
- ²⁶³Sg (~1 second, first discovered).
- ULCS: Glyph of deep pioneering, echo of transuranic wisdom.
- Etymology: Named after Glenn T. Seaborg, nuclear chemist.
Batch 32 — Bohrium to Hassium
Bohrium (Bh, Z=107)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁷⁰Bh (~61 seconds, longest-lived).
- ²⁶⁷Bh (~17 seconds, used in chemical characterization).
- ULCS: Glyph of trials, resonance of endurance through fleeting existence.
- Etymology: Named after Niels Bohr, Danish physicist and pioneer of atomic theory.
Hassium (Hs, Z=108)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁷⁷Hs (~12 minutes, longest-lived).
- ²⁶⁹Hs (~16 seconds, used in chemical studies).
- ULCS: Glyph of hidden density, bridge of fleeting permanence.
- Etymology: Named after the German state of Hesse (Hassia in Latin).
Batch 33 — Meitnerium to Darmstadtium
Meitnerium (Mt, Z=109)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁷⁸Mt (~4 seconds, longest-lived).
- ²⁷⁶Mt (~0.7 seconds, detected in experiments).
- ULCS: Glyph of recognition, honoring hidden pioneers through transient presence.
- Etymology: Named after physicist Lise Meitner, co-discoverer of nuclear fission.
Darmstadtium (Ds, Z=110)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸¹Ds (~12.7 seconds, longest-lived).
- ²⁸⁰Ds (~4 seconds).
- ULCS: Glyph of transience, fleeting bridge of matter at its limits.
- Etymology: Named after Darmstadt, Germany, where it was first synthesized.
Batch 34 — Roentgenium to Copernicium
Roentgenium (Rg, Z=111)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸²Rg (~2.1 minutes, longest-lived).
- ²⁸¹Rg (~26 seconds).
- ULCS: Glyph of hidden illumination, resonance of unseen rays.
- Etymology: Named after Wilhelm Conrad Röntgen, discoverer of X-rays.
Copernicium (Cn, Z=112)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸⁵Cn (~30 seconds, longest-lived).
- ²⁸⁴Cn (~0.1–0.2 seconds).
- ULCS: Glyph of orbital centrality, harmonics of heliocentric balance.
- Etymology: Named after Nicolaus Copernicus, originator of the heliocentric model.
Batch 35 — Nihonium to Flerovium
Nihonium (Nh, Z=113)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸⁴Nh (~0.5 seconds, longest-lived).
- ²⁷⁸Nh (~0.2 ms).
- ULCS: Glyph of fleeting bridges, resonance of transience and nationhood.
- Etymology: From Japanese Nihon (日本), meaning “Japan.”
Flerovium (Fl, Z=114)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸⁹Fl (~2.6 seconds, longest-lived).
- ²⁸⁸Fl (~0.65 seconds).
- ULCS: Glyph of experimental balance, harmonics of fleeting nuclei.
- Etymology: Named after Flerov Laboratory of Nuclear Reactions, itself honoring physicist Georgy Flyorov.
Batch 36 — Moscovium to Livermorium
Moscovium (Mc, Z=115)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁸⁹Mc (~220 ms, longest-lived).
- ²⁸⁷Mc (~46 ms).
- ULCS: Glyph of transient governance, resonance of collaborative creation.
- Etymology: Named after Moscow Oblast, Russia, recognizing the Joint Institute for Nuclear Research.
Livermorium (Lv, Z=116)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁹³Lv (~60 ms, longest-lived).
- ²⁹⁰Lv (~50 ms).
- ULCS: Glyph of vanishing weight, resonance of cooperative science.
- Etymology: Named after Lawrence Livermore National Laboratory in California, USA.
Batch 37 — Tennessine to Oganesson
Tennessine (Ts, Z=117)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁹³Ts (~20 ms).
- ²⁹⁴Ts (~78 ms, longest-lived).
- ULCS: Glyph of boundary resonance, transitional arc before closure.
- Etymology: Named after Tennessee (USA), honoring Oak Ridge National Laboratory, Vanderbilt University, and the University of Tennessee.
Oganesson (Og, Z=118)
- Stable Isotopes: None.
- Notable Isotopes:
- ²⁹⁴Og (~0.89 ms, only confirmed isotope).
- ULCS: Glyph of terminal loop, closure of elemental order, resonance of the final breath of matter.
- Etymology: Named after Yuri Oganessian, Russian physicist for contributions to transactinide element research.
ULCS Isotope Atlas – SolveForce Communications
Complete Isotope Families – SolveForce Communications
(UAT) Universal Adaptive Time – SolveForce Communications