{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:22:53Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 18.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0955a-3f82-70c0-9c33-52822cbca505\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: monoisotopic element\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044:", "usd": 0.0, "recall": true }, "codex": { "seconds": 58.5, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0955a-3f75-78e3-b143-661601a98e09\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: monoisotopic element\nRegistry id: vr.tr.monoisotopic-element\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into thi" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:52:08+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:30+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q3588104", "registryId": "vr.tr.monoisotopic-element", "name": "monoisotopic element", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q3588104/", "model": { "registry_id": "vr.tr.monoisotopic-element", "name": "monoisotopic element", "purpose": "Enable an agent to identify an element classified as monoisotopic under an explicit convention and judge when that classification supports isotope-composition or atomic-mass decisions.", "definition": "A monoisotopic element is a chemical element with exactly one stable isotope, even if other, radioactive isotopes occur naturally.", "scope_statement": "This model owns the isotope-based classification of chemical elements under vr.tr.monoisotopic-element in PHY / PHY.MAT, including its definition, supporting nuclide evidence and limits of application to material samples.", "in_scope": [ "Classification convention and its source, edition and applicability", "Element identity and the nuclides relevant to classification", "Distinction between stable-isotope count and natural isotope composition", "Conditions for applying the classification to an actual sample", "Consequences for atomic-weight selection and isotope-sensitive calculations" ], "out_of_scope": [ "Complete chemical, phase and thermodynamic properties of each member element", "Detailed nuclear structure and decay models of individual nuclides", "Production and operation of isotope-separation equipment", "Compound identities and molecular monoisotopic-mass models", "Product-specific purity certification, hazard classification and handling procedures" ], "distinguishing_features": [ "Classification requires an explicit definition: the IUPAC Gold Book describes usage based on one isotope determining relative atomic mass, so an agent must not silently equate every use with exactly one stable isotope. See [IUPAC monoisotopic element](https://goldbook.iupac.org/terms/view/08735).", "Having exactly one qualifying stable isotope does not itself establish that every natural or manufactured sample contains only that isotope.", "A sample enriched in one isotope does not establish that its parent element belongs to this classification.", "Mononuclidic status must be assessed separately under an explicit natural-occurrence criterion rather than inferred from a similar name.", "Molecular monoisotopic mass is a calculation concept, not an element-membership test. See [IUPAC monoisotopic mass](https://goldbook.iupac.org/terms/view/12495)." ], "characteristics": [ { "name": "Classification convention", "kind": "category", "unit_or_values": "Exactly one stable isotope; single isotope determining relative atomic mass; other explicitly sourced convention", "why_it_matters": "Different conventions can produce different membership decisions." }, { "name": "Element identity", "kind": "relation", "unit_or_values": "Chemical element identified by name, symbol and atomic number Z", "why_it_matters": "The classification belongs to an element rather than a particular isotope or sample." }, { "name": "Qualifying nuclide", "kind": "relation", "unit_or_values": "Nuclide identified by Z, mass number A and nuclear state when relevant", "why_it_matters": "Names the isotope on which the membership assertion depends." }, { "name": "Qualifying isotope count", "kind": "measurement", "unit_or_values": "Nonnegative integer under the selected convention and evidence edition", "why_it_matters": "Makes the classification test explicit and reproducible." }, { "name": "Nuclide stability assessment", "kind": "state", "unit_or_values": "Evaluated as stable; observed radioactive; unresolved, with evaluation reference", "why_it_matters": "Prevents a long half-life or absent observation from becoming an unsupported claim of absolute stability." }, { "name": "Radioactive half-life", "kind": "measurement", "unit_or_values": "Seconds or years, with uncertainty or lower bound", "why_it_matters": "Supports conventions that treat long-lived nuclides differently from strictly stable nuclides." }, { "name": "Sample isotope amount fractions", "kind": "measurement", "unit_or_values": "mol/mol, with uncertainty, detection limits and sampling context", "why_it_matters": "Tests whether the element-level classification supports a single-isotope approximation for the material." }, { "name": "Atomic-weight applicability", "kind": "state", "unit_or_values": "Standard value applicable; sample-specific value required; unresolved", "why_it_matters": "Controls whether a reference atomic weight can be used for the intended calculation." } ], "affordances": [ "Evaluate element membership under a named isotope convention.", "Explain disagreements between classification sources without merging their definitions.", "Check whether enrichment, irradiation or provenance undermines a single-isotope sample assumption.", "Select an appropriately sourced atomic mass or atomic weight for a stated calculation.", "Flag membership assertions for review when nuclide evaluations or terminology change." ], "agent_conduct": { "may": [ "Explain what a monoisotopic element is and list such elements from authoritative isotope data.", "Distinguish monoisotopic from mononuclidic elements when the difference matters." ], "must_not": [ "Present an element as monoisotopic using outdated or unsourced isotope data.", "Treat a monoisotopic element as free of radioactive isotopes in nature without checking.", "Confuse the concept with elements that simply have one common isotope." ], "requires_human": [ "Relying on isotope data for a safety, medical or nuclear decision." ] }, "ethics": { "considerations": [ "Errors in basic scientific data spread into teaching and calculations.", "Students and analysts depend on precise definitions." ], "affected_parties": [ "Students and teachers", "Analytical chemists", "Readers of reference works" ] }, "owners": { "steward": "Nobody owns the concept; the scientific community maintains isotope data.", "master_systems": [] }, "failure_modes_and_hazards": [ "Calculation errors from confusing monoisotopic with mononuclidic elements.", "Outdated isotope data used as if current." ], "standards_and_regulation": [ "Standard atomic weights and isotopic abundances, IUPAC Commission on Isotopic Abundances and Atomic Weights." ], "what_it_is_for": [ "The monoisotopic classification is used in isotope chemistry, nuclear reference data and interpretation of mass spectra.", "It identifies elements with exactly one stable isotope under the stated stability convention.", "The classification helps distinguish isotope stability from natural abundance because naturally occurring radioactive isotopes may also be present." ], "facets_not_applicable": { "recognition": "Monoisotopic status is an abstract isotope classification that cannot be identified from a material's visible appearance." } }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q3588104: monoisotopic element", "url": "https://www.wikidata.org/wiki/Q3588104", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Monoisotopic element", "url": "https://en.wikipedia.org/wiki/Monoisotopic_element", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "classification-convention", "name": "Classification convention", "description": "Establishes what monoisotopic means for this registry entry and each membership assertion.", "rationale": "A membership list is unusable unless its defining criterion is known.", "layers": [ { "id": "meaning-and-authority", "name": "Meaning and authority", "description": "Separates terminology from the evidence used to classify elements.", "findings": [ { "id": "explicit-membership-rule", "name": "Explicit membership rule", "description": "Record the adopted definition and retain competing definitions as attributed alternatives. The Gold Book documents an atomic-mass-based usage: [IUPAC definition](https://goldbook.iupac.org/terms/view/08735).", "questions": [ { "text": "Does this assertion mean exactly one stable isotope or one isotope determining relative atomic mass?", "kind": "definition", "id": "explicit-membership-rule-q01" }, { "text": "Which source and edition establish that meaning?", "kind": "provenance", "id": "explicit-membership-rule-q02" } ] } ] }, { "id": "neighbouring-classifications", "name": "Neighbouring classifications", "description": "Tests boundaries with mononuclidic elements and isotopically enriched materials.", "findings": [ { "id": "element-versus-sample", "name": "Element versus sample", "description": "Keep element membership separate from assertions about natural occurrence or a prepared sample's isotopic purity.", "questions": [ { "text": "Is the assertion about an element, naturally occurring material or one prepared sample?", "kind": "boundary", "id": "element-versus-sample-q01" }, { "text": "What separately stated criterion would establish mononuclidic status?", "kind": "definition", "id": "element-versus-sample-q02" } ] } ] } ] }, { "id": "qualifying-nuclide-evidence", "name": "Qualifying nuclide evidence", "description": "Connects membership to identified nuclides and evaluated stability evidence.", "rationale": "An agent must be able to reproduce the isotope count rather than trust an unexplained label.", "layers": [ { "id": "nuclide-identification", "name": "Nuclide identification", "description": "Identifies the element and the isotope or isotopes relevant to the selected criterion.", "findings": [ { "id": "reproducible-isotope-count", "name": "Reproducible isotope count", "description": "Record the qualifying nuclide set and the evaluation supporting its completeness.", "questions": [ { "text": "Which nuclide qualifies, identified by atomic number and mass number?", "kind": "definition", "id": "reproducible-isotope-count-q01" }, { "text": "Which evaluated source supports that exactly one isotope meets the adopted criterion?", "kind": "provenance", "id": "reproducible-isotope-count-q02" } ] } ] }, { "id": "stability-and-revision", "name": "Stability and revision", "description": "Captures decay evidence and the conditions that could change classification.", "findings": [ { "id": "qualified-stability-claim", "name": "Qualified stability claim", "description": "Distinguish evaluated stability, measured decay and half-life limits; apply any lifetime threshold only when the selected convention specifies one.", "questions": [ { "text": "Is stability assigned by evaluation, or is there a measured half-life or experimental lower bound?", "kind": "measurement", "id": "qualified-stability-claim-q01" }, { "text": "What new decay evidence or revised threshold would require reassessing membership?", "kind": "action", "id": "qualified-stability-claim-q02" } ] } ] } ] }, { "id": "sample-isotopic-applicability", "name": "Sample isotopic applicability", "description": "Determines whether element membership justifies assumptions about a particular material.", "rationale": "Classification alone cannot certify isotope composition or chemical purity.", "layers": [ { "id": "material-history", "name": "Material history", "description": "Records origins and processes that may affect isotope composition.", "findings": [ { "id": "composition-altering-history", "name": "Composition-altering history", "description": "Evaluate natural provenance, isotope enrichment, irradiation and introduced radionuclides before applying a single-isotope approximation.", "questions": [ { "text": "What evidence establishes the material's origin and any enrichment or irradiation history?", "kind": "provenance", "id": "composition-altering-history-q01" }, { "text": "Could that history introduce other isotopes relevant to the intended use?", "kind": "boundary", "id": "composition-altering-history-q02" } ] } ] }, { "id": "composition-verification", "name": "Composition verification", "description": "Assesses measurements against the accuracy needed for a specific use.", "findings": [ { "id": "bounded-single-isotope-approximation", "name": "Bounded single-isotope approximation", "description": "Treat undetected isotopes as bounded by assay capability rather than absent, and distinguish isotope purity from elemental purity.", "questions": [ { "text": "What isotope fractions, uncertainties and detection limits were established by the assay?", "kind": "measurement", "id": "bounded-single-isotope-approximation-q01" }, { "text": "Are the bounds sufficient for the intended calculation or must a more sensitive assay be requested?", "kind": "action", "id": "bounded-single-isotope-approximation-q02" } ] } ] } ] }, { "id": "atomic-mass-use", "name": "Atomic mass use", "description": "Supports defensible mass calculations using the correct quantity and material assumptions.", "rationale": "A monoisotopic label is useful only when its implications for mass values and uncertainty are applied correctly.", "layers": [ { "id": "mass-quantity-selection", "name": "Mass quantity selection", "description": "Separates isotope mass, mass number, relative atomic mass and standard atomic weight.", "findings": [ { "id": "appropriate-mass-reference", "name": "Appropriate mass reference", "description": "Identify the required quantity and its applicability. CIAAW standard atomic weights concern normal materials: [Standard atomic weights](https://www.ciaaw.org/atomic-weights.htm).", "questions": [ { "text": "Does the task require isotope mass in daltons, dimensionless relative atomic mass or a standard atomic weight?", "kind": "definition", "id": "appropriate-mass-reference-q01" }, { "text": "Which reference value, uncertainty and material conditions support the selected quantity?", "kind": "provenance", "id": "appropriate-mass-reference-q02" } ] } ] }, { "id": "calculation-validity", "name": "Calculation validity", "description": "Checks whether isotope simplification meets the task's error tolerance.", "findings": [ { "id": "justified-mass-simplification", "name": "Justified mass simplification", "description": "Evaluate whether ignoring additional isotope contributions changes the result materially; retain uncertainties even when one isotope supplies the calculation.", "questions": [ { "text": "What upper bound on mass error follows from the measured or bounded additional isotope fractions?", "kind": "measurement", "id": "justified-mass-simplification-q01" }, { "text": "Should the agent accept the single-isotope calculation, use a composition-weighted value or defer pending evidence?", "kind": "action", "id": "justified-mass-simplification-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Stable can mean observationally stable; an authoritative enumeration should state how theoretically possible but unobserved decay is treated.", "Fluorine, sodium and aluminium are familiar examples; no exhaustive list or count is asserted here.", "Natural occurrence conventions, especially treatment of trace radionuclides, should be checked when comparing monoisotopic and mononuclidic classifications." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Chemical element symbol and nuclide notation", "value_or_pattern": "Element symbol with a mass-number superscript, such as ²³Na", "note": "Identifies the element and its sole stable isotope; the class itself has no single substance identifier." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Interpreting isotope patterns in mass spectrometry.", "Calculating exact molecular masses from specified isotopic compositions.", "Distinguishing stable-isotope diversity from natural isotopic composition." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Number of stable isotopes per element", "typical_range": "Exactly 1", "unit": "count" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Assuming that having one stable isotope means only one isotope occurs naturally.", "Assuming that every sample of a monoisotopic element is free of radioactive isotopes.", "Inferring chemical safety from isotope classification; hazards depend on the element, chemical form, dose and exposure route." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Mononuclidic element", "difference": "Has only one naturally occurring nuclide under the adopted convention; monoisotopic refers to the number of stable isotopes." }, { "name": "Isotopically pure material", "difference": "Describes a particular sample dominated by one isotope, including samples of elements with several stable isotopes." }, { "name": "Monoisotopic mass", "difference": "Is a mass calculated for a specified isotopic composition, rather than a classification of an element." }, { "name": "Chemical element", "difference": "Groups atoms by proton number; monoisotopic elements are the subset with exactly one stable isotope." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of monoisotopic element this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which definition did the registry intend: exactly one stable isotope or the atomic-mass-based usage documented by IUPAC?", "Which evaluated nuclide dataset and edition should govern stability assignments and the resulting membership list?", "How should this registry express the relationship to mononuclidic elements without treating the terms as unconditional synonyms?", "What assay limits and error tolerances justify a single-isotope approximation for each intended application?", "Which existing Vercy element, nuclide and sample models should supply shared properties without duplicating them here?" ], "statistics": { "bundles": 5, "layers": 9, "findings": 14, "questions": 22 } }