{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.noble-gases","code":"thing-q19609","url":"https://ver.cy/models/thing/q19609/","name":"noble gases","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.5","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The elements of group 18 of the periodic table: helium, neon, argon, krypton, xenon, radon and oganesson. The first six are colourless, odourless, monatomic gases of very low reactivity under ordinary conditions, though heavier ones form some compounds; oganesson's bulk properties have not been observed.","purpose":"Let an agent give properties, uses and hazards of the noble gases from authoritative data, and explain their chemistry accurately.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Full valence electron shells make them very unreactive.","Xenon and krypton form compounds such as XeF2; Neil Bartlett made the first noble gas compound in 1962.","Radon is radioactive and a major cause of lung cancer after smoking."],"structure":{"bundles":[{"id":"element","name":"Element","description":"Which noble gas.","layers":[{"id":"identity","name":"Identity","description":"Name and number.","findings":[{"id":"element","name":"Element","description":"Name, symbol, atomic number.","questions":[{"text":"Which element is meant?","kind":"provenance"},{"text":"What is its atomic number?","kind":"measurement"}]}]},{"id":"isotopes","name":"Isotopes","description":"Isotopes.","findings":[{"id":"isotope","name":"Isotope","description":"Sample identity, phase, temperature and pressure, measured isotope ratios and provenance; measured vs predicted values.","questions":[{"text":"Which isotopes matter here?","kind":"provenance"},{"text":"Are they radioactive?","kind":"boundary"}]}]}]},{"id":"properties","name":"Properties","description":"Physical and chemical.","layers":[{"id":"physical","name":"Physical","description":"Boiling point, density.","findings":[{"id":"physical-data","name":"Physical data","description":"Values and source.","questions":[{"text":"What are its boiling point and density?","kind":"measurement"},{"text":"From which reference?","kind":"provenance"}]}]},{"id":"chemistry","name":"Chemistry","description":"Compounds.","findings":[{"id":"compound","name":"Compound","description":"Formula and conditions.","questions":[{"text":"Which compounds are known?","kind":"provenance"},{"text":"Under what conditions?","kind":"provenance"}]}]}]},{"id":"uses","name":"Uses","description":"Applications.","layers":[{"id":"industry","name":"Industry","description":"Welding, lighting, lasers.","findings":[{"id":"use","name":"Use","description":"Application.","questions":[{"text":"How is it used?","kind":"provenance"},{"text":"What purity is needed?","kind":"measurement"}]}]},{"id":"supply","name":"Supply","description":"Production.","findings":[{"id":"supply","name":"Supply","description":"Source and constraints.","questions":[{"text":"How is it produced?","kind":"provenance"},{"text":"Is supply constrained?","kind":"provenance"}]}]}]},{"id":"safety","name":"Safety","description":"Hazards.","layers":[{"id":"asphyxiation","name":"Asphyxiation","description":"Oxygen displacement.","findings":[{"id":"asphyxiation-risk","name":"Asphyxiation risk","description":"Controls.","questions":[{"text":"What controls prevent asphyxiation?","kind":"provenance"},{"text":"Which monitoring is used?","kind":"provenance"}]}]},{"id":"radon","name":"Radon","description":"Radioactivity.","findings":[{"id":"radon-level","name":"Radon level","description":"Value and reference.","questions":[{"text":"What radon level was measured?","kind":"measurement"},{"text":"Against which reference level?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["give properties, uses and safety information"],"mustNot":["advise inhaling gases","downplay asphyxiation risk"],"requiresHuman":[]},"ethics":{"considerations":["safety","helium scarcity"],"affectedParties":["workers","residents in radon areas"]},"owners":{"steward":"nobody; chemical elements","roles":[],"masterSystems":["IUPAC","PubChem"]},"relations":[{"target":"Q11136680","type":"parent","note":"registry parent class"},{"target":"Q11344","type":"parent","note":"registry parent class"},{"target":"Q2512777","type":"parent","note":"registry parent class"},{"target":"periodic table","type":"related","note":"group 18"},{"target":"welding","type":"related","note":"shielding gas"},{"target":"radon exposure","type":"related","note":"health hazard"},{"target":"inert gas (industrial)","type":"related","note":"includes nitrogen"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.noble-gases","Wikidata: Q19609 (https://www.wikidata.org/wiki/Q19609)","IUPAC group: 18","CAS: 7440-59-7 (He), 7440-01-9 (Ne), 7440-37-1 (Ar) per element"]},"properties":{"applicability":"required","items":["boiling point of helium: 4.22 K - at 1 atm","argon in dry air: about 0.93 % by volume"]},"recognition":{"applicability":"required","items":["Characteristic emission colours when excited in discharge tubes (neon red-orange); no bulk observations exist for oganesson","Colourless gases; they glow in characteristic colours in discharge tubes."]},"capabilities":{"applicability":"required","items":["give properties of each element from data sources","explain low reactivity and known compounds","describe uses","explain hazards such as asphyxiation and radon"]},"hazards":{"applicability":"required","items":["Asphyxiation from oxygen displacement","Radon-related lung cancer","Cryogenic burns from liquefied gases"]},"interfaces":{"applicability":"required","items":["IUPAC periodic table","WHO handbook on indoor radon","Gas cylinder and asphyxiant safety rules"]},"context":{"applicability":"required","items":["Lighting, welding shielding, cryogenics, medical imaging, lasers and inert atmospheres.","helium","neon","argon","krypton","xenon","radon","oganesson (synthetic; properties predicted, not measured)"]}},"sources":[{"title":"Q19609","url":"https://www.wikidata.org/wiki/Q19609","note":"identity of the registry item, labels and sitelinks"},{"title":"Noble gas","url":"https://en.wikipedia.org/wiki/Noble_gas","note":"general description of the subject"},{"title":"Oganesson - Element information, properties and uses","url":"https://periodic-table.rsc.org/element/118/oganesson","note":"Established group-18 membership and uncertainty in physical properties."},{"title":"Helium - Element information, properties and uses","url":"https://periodic-table.rsc.org/element/2/Helium","note":"Helium CAS number, 4.222 K boiling point, electron configuration, isotopes and uses."},{"title":"Argon - Element information, properties and uses","url":"https://periodic-table.rsc.org/element/18/argon/","note":"Argon CAS number, approximately 0.93% atmospheric abundance, isotopes and shielding uses."},{"title":"Neon","url":"https://webbook.nist.gov/cgi/cbook.cgi?ID=7440-01-9","note":"Neon identity and CAS number 7440-01-9."},{"title":"Neil Bartlett and the Reactive Noble Gases","url":"https://www.acs.org/education/whatischemistry/landmarks/bartlettnoblegases.html","note":"Bartlett's 1962 discovery and the existence of noble-gas compounds."},{"title":"Radon","url":"https://www.who.int/news-room/fact-sheets/detail/radon-and-health","note":"Radon radioactivity and lung-cancer risk."}],"openQuestions":[],"resources":{"spec":"/models/things/publications/thing-q19609/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q19609/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-10-21T21:11:21Z","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 2026-10-21T21:27:15+00:00: completeness 1.00; sense: Wikidata description; 8 live sources; review by codex: pass"},"score":1.0}}