krypton
Let an agent identify krypton and its properties, relay isotopes, production and uses from reference sources, explain its historical role in defining the metre, and distinguish it from other noble gases.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What krypton is.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of krypton? definition
- Is the question about krypton or a neighbouring noble gas? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- Which isotopes exist, and how is krypton-85 used and monitored? definition
- Which entry fits the specific isotope? action
Source Occurrence and production.
Occurrence
Occurrence.
Occurrence
Occurrence.
- Where does krypton occur, and how is it extracted from air? provenance
- Which entry fits air separation? action
Supply
Supply.
Supply
Supply.
- Who produces krypton, and how is it traded, with sources? measurement
- Which sources are cited? provenance
Use Uses and safety.
Uses
Uses.
Uses
Uses.
- How is krypton used in lighting, lasers, windows and leak detection? provenance
- Which entry fits gas discharge lamp? action
Safety
Safety.
Safety
Safety.
- What hazards does krypton present, and how is Kr-85 regulated? provenance
- Is the user asking about a personal exposure, which needs a specialist? boundary
Context History.
Discovery
Discovery.
Discovery
Discovery.
- How was krypton discovered by Ramsay and Travers in 1898, and how was it named? provenance
- Which references are standard? provenance
Metre
The metre definition.
Metre
Metre.
- How did a krypton-86 spectral line define the metre from 1960 to 1983? provenance
- Which entry fits the history of the metre? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- krypton-100, krypton-101, krypton-69, krypton-70, krypton-71, krypton-72, krypton-73, krypton-74, krypton-75, krypton-76, krypton-77, krypton-79
What it is Filled
A chemical element with symbol Kr and atomic number 36, a colourless, odourless noble gas present in trace amounts in the atmosphere, obtained by fractional distillation of liquid air; krypton is used in lighting, lasers, insulating windows and, through the isotope krypton-85, in leak detection and as a tracer, its spectral line once defined the metre, and its naturally occurring isotopes include five stable isotopes and the extremely long-lived radioactive isotope krypton-78.
Why it exists Filled
Let an agent identify krypton and its properties, relay isotopes, production and uses from reference sources, explain its historical role in defining the metre, and distinguish it from other noble gases.
Distinguishing features Filled
- Krypton is a noble gas.
- Naturally occurring krypton includes five stable isotopes and the extremely long-lived radioactive isotope krypton-78.
- Krypton-85 is produced by nuclear fission.
- A krypton spectral line formerly defined the metre.
What robots and AI may and may not do Filled
Must not
- Advise entering confined spaces where krypton or other inert gases may have displaced the air.
- Present krypton as harmless to breathe because it is non-toxic.
- Give guidance on handling sealed krypton-85 sources outside licensed use.
- Mix fictional properties of kryptonite into factual statements about the element.
Only with a human decision
- Entry into a tank, room or vessel where inert gas may have accumulated.
May
- Explain krypton's properties as a noble gas and its uses in lighting, insulated glazing and lasers.
- Describe krypton-85 as a fission product and its use in monitoring nuclear activity.
- Clarify the difference between the element and the fictional planet or mineral named kryptonite.
Moral aspects Filled
- Inert gases suffocate without warning, and confined space deaths often include rescuers.
- Honest science communication matters when popular fiction overshadows the real element.
Who is affected
- Workers in gas handling and glazing plants
- Rescuers entering confined spaces
- Students and readers
Owners Filled
Steward
Nobody owns the element; gas suppliers and licensed holders of radioactive sources answer for their stock.
Links to other meta-models Filled
parent
- Q19609 - registry parent class
related
- noble gas - in registry terms
- bromine - element 35
- rubidium - element 37
- metre - from 1960 to 1983
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.krypton
- Wikidata: Q888 (https://www.wikidata.org/wiki/Q888)
- symbol: Kr
- CAS: 7439-90-9
Direct properties required Filled
- atomic number: 36 Z
- standard atomic weight: 83.798 u
- boiling point: -153.4 degrees C
- atmospheric abundance: about 1.1 ppm - by volume
Recognition required Filled
- Element 36, symbol Kr
- Noble gas, trace in air
- Argon and xenon are the neighbouring noble gases; the fictional kryptonite is unrelated
- A colourless gas that glows whitish in a discharge tube.
Capabilities and actions required Filled
- relay properties and isotopes
- explain production and uses
- explain the metre definition history
- distinguish from other noble gases
Hazards and failure modes required Filled
- Asphyxiation in confined spaces
- Radiation from Kr-85
- Confusion with fiction
Standards and interfaces required Filled
- Compressed gas safety standards
- Radiation rules for krypton-85 sources
- Monitoring of Kr-85 as a nuclear activity indicator
Context of use required Filled
- Lighting, lasers, insulation and tracers.
- krypton gas
- isotopes from krypton-69 to krypton-101, with six stable and Kr-85 radioactive
- krypton compounds such as krypton difluoride, few and unstable
- krypton in lamps and lasers
Sources Filled
- Wikidata item Q888: krypton - identity and sense of the item
- Wikipedia: Krypton - general description of the item
Open questions
- Should krypton-85 be a separate entry?
- How should reference data be linked?
- The registry entry has merged aliases naming isotopes; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q888/spec.json