{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.lawrencium","code":"thing-q1905","url":"https://ver.cy/models/thing/q1905/","name":"lawrencium","alternateNames":["lawrencium-252","lawrencium-253","lawrencium-254","lawrencium-255","lawrencium-256","lawrencium-257","lawrencium-258","lawrencium-259","lawrencium-260","lawrencium-261","lawrencium-262","lawrencium-263"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A synthetic radioactive chemical element with symbol Lr and atomic number 103, the last member of the actinide series, first produced in 1961 at the Lawrence Radiation Laboratory in Berkeley by bombarding californium with boron ions, with discovery credit shared between the Berkeley and Dubna laboratories following an assessment that preceded the 1997 IUPAC naming settlement. The name honours Ernest Lawrence, inventor of the cyclotron. All its isotopes, such as lawrencium-252 through lawrencium-257 and the longer-lived lawrencium-266, are short-lived and made only a few atoms at a time, so it has no uses outside research, and its electron configuration and placement in the periodic table are debated.","purpose":"Let an agent explain lawrencium, relay discovery, naming, isotopes and periodic table debates from IUPAC and nuclear chemistry sources with positions attributed, describe the named isotopes, and distinguish lawrencium from lutetium, nobelium, rutherfordium and Lawrence Livermore National Laboratory.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Synthetic","Last actinide","Short-lived isotopes","Group placement debate"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What lawrencium is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is lawrencium, and how does it differ from lutetium, nobelium, rutherfordium and Lawrence Livermore laboratory?","kind":"definition"},{"text":"Is the question about chemistry, discovery history or periodic table design?","kind":"boundary"}]}]},{"id":"isotopes","name":"Isotopes","description":"Named isotopes.","findings":[{"id":"isotopes-finding","name":"Isotopes","description":"Isotopes.","questions":[{"text":"What are lawrencium-252 to 257, and which isotope lives longest?","kind":"definition"},{"text":"Which entry fits the specific isotope?","kind":"action"}]}]}]},{"id":"history","name":"History","description":"Discovery.","layers":[{"id":"berkeley","name":"Berkeley","description":"Discovery.","findings":[{"id":"berkeley-finding","name":"Berkeley","description":"Berkeley.","questions":[{"text":"How was lawrencium first made at Berkeley in 1961?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"priority","name":"Priority","description":"Priority dispute.","findings":[{"id":"priority-finding","name":"Priority","description":"Priority.","questions":[{"text":"How did IUPAC resolve the Berkeley and Dubna discovery claims, with positions attributed?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"chemistry","name":"Chemistry","description":"Chemistry.","layers":[{"id":"config","name":"Electron configuration","description":"Electron configuration.","findings":[{"id":"config-finding","name":"Electron configuration","description":"Electron configuration.","questions":[{"text":"Why is lawrencium s ground-state electron configuration unusual, as measurements suggest?","kind":"provenance"},{"text":"Which entry fits relativistic quantum chemistry?","kind":"action"}]}]},{"id":"group3","name":"Group 3","description":"Periodic table placement.","findings":[{"id":"group3-finding","name":"Group 3","description":"Group 3.","questions":[{"text":"What do chemists argue about placing lawrencium or lanthanum in group 3, with positions attributed?","kind":"provenance"},{"text":"Is the presentation neutral and attributed?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Research.","layers":[{"id":"synthesis","name":"Synthesis","description":"Superheavy synthesis.","findings":[{"id":"synthesis-finding","name":"Synthesis","description":"Synthesis.","questions":[{"text":"How are heavy elements made one atom at a time?","kind":"provenance"},{"text":"Which entry fits synthesis of superheavy elements?","kind":"action"}]}]},{"id":"lawrence","name":"Lawrence","description":"Ernest Lawrence.","findings":[{"id":"lawrence-finding","name":"Lawrence","description":"Lawrence.","questions":[{"text":"Who was Ernest Lawrence, and why is the cyclotron important?","kind":"provenance"},{"text":"Which entry fits cyclotron?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe lawrencium, its place in the periodic table and the history of its discovery.","Present disputed questions, such as its group placement, with views attributed."],"mustNot":["Imply that lawrencium has practical uses beyond research.","Present its disputed periodic table placement as settled.","Quote outdated half-life data as current.","Credit its discovery to one laboratory without noting the shared credit."],"requiresHuman":["Publishing a summary of disputed discovery claims."]},"ethics":{"considerations":["Scientific credit disputes affect researchers' recognition."],"affectedParties":["Researchers","Students"]},"owners":{"steward":"Nobody owns the element; IUPAC names it and approves discovery claims.","roles":[],"masterSystems":[]},"relations":[{"target":"Q19577","type":"parent","note":"registry parent class"},{"target":"actinide","type":"related","note":"in registry terms"},{"target":"Ernest Lawrence","type":"related"},{"target":"nobelium","type":"related"},{"target":"lutetium","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.lawrencium","Wikidata: Q1905 (https://www.wikidata.org/wiki/Q1905)","CAS Registry Number: 22537-19-5"]},"properties":{"applicability":"required","items":["atomic number: 103 count","symbol: Lr code - originally Lw","first synthesis: 1961 year - Berkeley"]},"recognition":{"applicability":"required","items":["Element 103, last actinide","Lawrencium-252, lawrencium-253, lawrencium-254, lawrencium-255, lawrencium-256, lawrencium-257","Lutetium is its lanthanide analogue; nobelium is element 102; rutherfordium is element 104; Lawrence Livermore is a laboratory","Never observed in visible amounts; predicted to be a silvery metal."]},"capabilities":{"applicability":"required","items":["explain discovery and naming","relay isotopes","present periodic table debates with attribution","distinguish related elements"]},"hazards":{"applicability":"required","items":["Implying practical uses","Presenting disputed placement as settled","Stale half-life data"]},"interfaces":{"applicability":"required","items":["IUPAC element naming and discovery criteria","Radiation safety rules for research"]},"context":{"applicability":"required","items":["Scientific research only.","lawrencium isotopes","actinides","transfermium elements"]}},"sources":[{"title":"Wikidata item Q1905: lawrencium","url":"https://www.wikidata.org/wiki/Q1905","note":"identity and sense of the item"},{"title":"Wikipedia: Lawrencium","url":"https://en.wikipedia.org/wiki/Lawrencium","note":"general description of the item"}],"openQuestions":["Should isotopes be separate entries?","How should the group 3 placement debate be presented?","How should nuclear data be linked?"],"resources":{"spec":"/models/things/publications/thing-q1905/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1905/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T23:00:42Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:27+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}