molybdenum
Let an agent identify molybdenum and its properties, relay production, uses, isotopes and biological roles from reference sources, explain the medical importance of molybdenum-99, and distinguish it from similar metals.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What molybdenum is.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of molybdenum? definition
- Is the question about molybdenum or a related metal such as tungsten? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- Which isotopes exist, and why is molybdenum-99 important? definition
- Which entry fits the specific isotope? action
Industry Production and uses.
Production
Mining and refining.
Production
Production.
- How is molybdenum mined and refined, and who produces it, with sources? provenance
- Which sources are cited? provenance
Uses
Uses.
Uses
Uses.
- How is molybdenum used in steel, catalysts, lubricants and electronics? provenance
- Which entry fits a specific alloy or product? action
Science Biology and medicine.
Biology
Biological role.
Biology
Biology.
- What role does molybdenum play in enzymes and nutrition? provenance
- Which references are standard? provenance
Medical
Medical isotopes.
Medical
Medical.
- How is molybdenum-99 produced and used to supply technetium-99m, and why have shortages occurred? provenance
- Which entry fits technetium-99m? action
Context History and safety.
History
History.
History
History.
- How was molybdenum identified by Scheele and Hjelm, and how did its use in steel develop? provenance
- Which entry fits the history of chemistry? action
Safety
Safety.
Safety
Safety.
- What hazards do molybdenum compounds present, and what limits apply? provenance
- Is the user asking about a personal exposure, which needs a clinician or poison centre? boundary
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- molybdenum-94, molybdenum-83, molybdenum-84, molybdenum-85, molybdenum-86, molybdenum-87, molybdenum-88, molybdenum-89, molybdenum-90, molybdenum-91, molybdenum-93, molybdenum-101
What it is Filled
A chemical element with symbol Mo and atomic number 42, a hard, silvery transition metal with one of the highest melting points, not found free in nature but obtained mainly from molybdenite; molybdenum is used chiefly in steel alloys for strength and corrosion resistance, in catalysts, lubricants as molybdenum disulfide and electrodes, is an essential trace element in enzymes, and has seven naturally occurring isotopes. Molybdenum-99 is a separately produced radioactive isotope used as the parent of technetium-99m in medical imaging, not one of those seven naturally occurring isotopes.
Why it exists Filled
Let an agent identify molybdenum and its properties, relay production, uses, isotopes and biological roles from reference sources, explain the medical importance of molybdenum-99, and distinguish it from similar metals.
Distinguishing features Filled
- Very high melting point
- Steel alloying element
- Essential in enzymes
- Mo-99 for medical imaging
What robots and AI may and may not do Filled
Must not
- Advise handling radioactive molybdenum isotopes outside licensed use.
- Present molybdenum compounds as safe supplements beyond evidence.
- Confuse molybdenum with similar metals in specifications.
- Advise disposing of molybdenum catalysts as ordinary waste.
Only with a human decision
- Decisions on allocating scarce medical isotopes.
May
- Explain molybdenum's properties and its uses in steel alloys, catalysts and lubricants.
- Describe molybdenum-99 and its role in producing medical imaging isotopes.
- Report on supply with sources and dates.
Moral aspects Filled
- Shortages of medical isotopes delay diagnosis for patients.
- Mining and refining affect workers and nearby communities.
Who is affected
- Patients needing imaging
- Workers
- Communities near mines
Owners Filled
Steward
Nobody owns the element; producers and licensed isotope holders answer for their stock.
Links to other meta-models Filled
parent
- Q105789 - registry parent class
related
- heavy metal - in registry terms
- transition metal - group 6
- steel - as an alloying element
- technetium-99m - through molybdenum-99
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.molybdenum
- Wikidata: Q1053 (https://www.wikidata.org/wiki/Q1053)
- symbol: Mo
- CAS: 7439-98-7
Direct properties required Filled
- atomic number: 42 Z
- standard atomic weight: 95.95 u
- melting point: 2623 degrees C
- density: 10.28 g/cm3
Recognition required Filled
- Element 42, symbol Mo
- Refractory transition metal
- Tungsten and chromium are related group 6 metals
- A hard, grey metal with a high melting point.
Capabilities and actions required Filled
- relay properties and isotopes
- explain production and uses
- explain medical isotope role
- distinguish from similar metals
Hazards and failure modes required Filled
- Medical isotope supply shortages
- Toxicity of some compounds
- Supply concentration
- Confusion with similar metals
Standards and interfaces required Filled
- Occupational exposure limits
- Dietary reference intakes for molybdenum
- Regulation of medical isotope production and supply
- Chemical safety data sheets
Context of use required Filled
- Steel alloying, catalysts, lubricants and medical isotope production.
- molybdenum metal and alloys
- molybdenum compounds such as disulfide and trioxide
- isotopes from molybdenum-83 to molybdenum-117, with seven natural and Mo-99 medically important
- molybdenum in enzymes such as nitrogenase and xanthine oxidase
Sources Filled
- Wikidata item Q1053: molybdenum - identity and sense of the item
- Wikipedia: Molybdenum - general description of the item
Open questions
- Should molybdenum-99 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-q1053/spec.json