sodium
Let an agent identify sodium and its properties, relay isotopes, compounds, production and uses from reference sources, describe dietary sodium and health guidance in general terms, and distinguish the element from salt and other compounds.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent identify sodium and its properties, relay isotopes, compounds, production and uses from reference sources, describe dietary sodium and health guidance in general terms, and distinguish the element from salt and other compounds.
A chemical element with symbol Na and atomic number 11, a soft, silvery, highly reactive alkali metal that must be stored under oil, occurring in compounds such as sodium chloride and sodium carbonate and never free in nature, essential to life as an electrolyte, and used in the form of its compounds in food, chemicals, glass and soap and as the metal in sodium vapour lamps, heat transfer in fast reactors and organic synthesis; sodium has one stable isotope, sodium-23, and radioactive ones such as sodium-22 and sodium-24, and dietary sodium intake is a public health concern.
What it is for: Compounds for industry and food; the metal for lamps, reactors and synthesis.
It can be relay properties and isotopes; explain compounds and uses; relay dietary guidance in general terms; distinguish from salt.
Distinguishing features
Highly reactive metal
Single stable isotope
Essential electrolyte
Dietary concern
What it looks like
A soft silvery metal that tarnishes quickly and reacts violently with water.
Physical character
atomic number: 11 Z
standard atomic weight: 22.990 u
melting point: 97.8 degrees C
recommended sodium intake: under 2 g per day - WHO for adults
How it is recognised
Element 11, symbol Na
Alkali metal of salt and electrolytes
Salt is sodium chloride, a compound; potassium is the next alkali metal
Related models
is a kind of - in registry terms
is a kind of - element in registry terms
is a kind of - in registry terms
forms - common salt
In practice
Families and kinds
sodium metal and its allotropes
sodium compounds such as chloride, hydroxide, carbonate and bicarbonate
stable sodium-23 and radioactive isotopes such as sodium-18, 22, 24, 25 and 26
dietary sodium
sodium in biology as an electrolyte
Identifiers
symbol Na
CAS 7440-23-5
Standards and regulation
Chemical safety rules for reactive metals
WHO and national dietary sodium guidelines
Food labelling rules for sodium and salt
Nuclear rules for sodium-cooled reactors
Failure modes and hazards
Fire and explosion with water
Excess dietary sodium and hypertension
Confusing sodium with salt
Agents giving personal dietary advice
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.sodium
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identify What sodium is.
Identity.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of sodium? definition
- Is the question about the element, salt or dietary sodium? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- Which isotopes exist, and how are sodium-22 and sodium-24 used? definition
- Which entry fits the specific isotope? action
Produce Compounds and production.
Industry.
Compounds
Compounds.
Compounds
Compounds.
- What are the major sodium compounds, and how are they produced and used? provenance
- Which entry fits the specific compound? action
Metal
Sodium metal.
Metal
Metal.
- How is sodium metal produced by the Downs process, and where is it used? provenance
- Which references are standard? provenance
Health Biology and diet.
Public health.
Biology
Sodium in the body.
Biology
Biology.
- What role does sodium play as an electrolyte and in nerve function? provenance
- Which entry fits electrolyte? action
Diet
Dietary sodium.
Diet
Diet.
- What do WHO and national guidelines say about sodium intake and health, in general terms? provenance
- Is the user asking for personal dietary advice, which needs a professional? boundary
Context History and safety.
Context.
Discovery
Discovery.
Discovery
Discovery.
- How was sodium isolated by Davy in 1807, and why is it called natrium in many languages? provenance
- Which entry fits the history of chemistry? action
Safety
Safety.
Safety
Safety.
- How is sodium metal handled safely, and what incidents have occurred, as reported? provenance
- Which sources are cited? provenance
What the second pass must settle
- Should dietary sodium and sodium chloride be separate primary entries?
- How should health guidelines be linked?
- The registry entry has merged aliases naming isotopes and an allotrope; should they be split off?