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Nitrogen: History, Applications & Standards

Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure, two atoms of the…

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Nitrogen topic overview

The analysis highlights History, Applications and Standards as prominent areas in the source structure around Nitrogen.

Related topics
402
Source areas
10
Connected nodes
416
Extracted relationships
338
Concept neighborhoods
84
Bridge connections
416

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Chemistry and compounds · 126 topics
Properties · 94 topics
Overview · 70 topics
Applications · 34 topics
History · 33 topics
Occurrence · 21 topics
Gas · 10 topics
Production · 7 topics
Liquid · 6 topics
Safety · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

13N
trace
14N
99.6%
15N
0.380%
16N
synth
Allotropes
see § Allotropes
Appearance
colorless gas, liquid or solid

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Properties

Chemistry and compounds

Occurrence

Production

Applications

Gas

Liquid

Safety

  • OSHA Occupational Safety and Health Administration

Bibliography

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Nitrogen connects Entity context

The extracted context around Nitrogen shows recurring relationship patterns in the source. For example, Nitrogen → Albanian, Alchemists, Antoine Lavoisier, Carl Wilhelm Scheele, Daniel Rutherford, Dutch, English, Finally, French, German Stickstoff, Greek, Henry Cavendish, Herodotus, In, Italian, Joseph Black's, Joseph Priestley, Middle Ages, Polish, Portuguese Another extracted example is Nitrogen → Azides, B-subgroup, Ba, Be, Ca Sr, Cs, However, KN3, Li3N, M3N2, Many, Mg, Mn2N, Mn3N2, Mn4N, Mn6N5, MnN, MnxN, N3, Na. Use these groups to spot repeated connection types before inspecting the individual relationships.

Nitrogen

Top relations

related to history · 28
Nitrogen → Albanian, Alchemists, Antoine Lavoisier, Carl Wilhelm Scheele, Daniel Rutherford, Dutch, English, Finally, French, German Stickstoff, Greek, Henry Cavendish, Herodotus, In, Italian, Joseph Black's, Joseph Priestley, Middle Ages, Polish, Portuguese
related to Nitrides, azides, and nitrido complexes · 26
Nitrogen → Azides, B-subgroup, Ba, Be, Ca Sr, Cs, However, KN3, Li3N, M3N2, Many, Mg, Mn2N, Mn3N2, Mn4N, Mn6N5, MnN, MnxN, N3, Na
related to Organic nitrogen compounds · 23
Nitrogen → Earth, In, Kjeldahl, Many, NOH, NR, R3N, R4N, RC, RCN, RCO, RCONR2, RN2R, RN3, RNC, RNCO, RNO, RNO2, ROCN, RONO
related to Halides and oxohalides · 21
Nitrogen → All, Dinitrogen, Fluorine, FN3, Like, N2F2, N2F4, NBrF2, NCl2F, NCl2H, NClF2, NClH2, NF, NF2, NF2H, NF3, NFH2, ONF3, Only, Tetrafluorohydrazine
related to Hydrides · 18
Nitrogen → Although, Ammonia, As, Despite, H2O, HN3, However, Hydrazine, Industrially, It, Its, Many, N2H4, NH, NH2OH, NH3, Reactions, The
related to Oxides · 18
Nitrogen → All, Despite, H2N2O2, In, It, Its, N2O, N2O3, N2O4, N2O5, N4O, Nitric, Nitrous, NO, NO2, One, There, This
related to Gas · 17
Nitrogen → Although, An, As, E941, European Union, In, Information, IT, March, Pure, Some, Space Shuttle, Space Shuttle's, The, This, To, When
related to Liquid · 17
Nitrogen → As, Because, England, For, In, Ingestion, It, January, Leidenfrost, Like, Liquid, Other, Texas, The, University, When, X-ray
related to Oxoacids, oxoanions, and oxoacid salts · 17
Nitrogen → Acidic, H2N2O2, HNO2, HON, HONNO, Hyponitrite, Hyponitrites, Hyponitrous, II, It, Many, Nitrous, NO, NOH, Salts, Sodium, They
related to Atomic · 13
Nitrogen → Allen, Although, Due, Following, Hypervalency, In, It, MJ, N3, O2, Pauling, The, Thus

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

oxygen gas compounds acid ammonia used carbon nitric liquid water oxide known also many produced dinitrogen form complexes first air

Nitrogen relationships Subject–Predicate–Object triples

TTTA extracted 338 structured relationships around Nitrogen. Examples in this analysis include Nitrogen → 13N → trace and Nitrogen → 14N → 99.6%. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Nitrogen13Ntrace1.00infobox
Nitrogen14N99.6%1.00infobox
Nitrogen15N0.380%1.00infobox
Nitrogen16Nsynth1.00infobox
NitrogenAllotropessee § Allotropes1.00infobox
NitrogenAppearancecolorless gas, liquid or solid1.00infobox
Nitrogenat T (K)371.00infobox
NitrogenAtomic number (Z)71.00infobox
NitrogenBlockp-block1.00infobox
NitrogenBoiling point(N2) 77.355 K ​(−195.795 °C, ​−320.431 °F)1.00infobox
NitrogenCAS Number17778-88-0 7727-37-9 (N2)1.00infobox
NitrogenCovalent radius71±1 pm1.00infobox
NitrogenCritical point126.21 K, 3.39 MPa1.00infobox
NitrogenCrystal structure​hexagonal (hP4)1.00infobox
NitrogenDensity (at STP)1.2506 g/L at 0 °C, 1013 mbar1.00infobox
NitrogenDiscoveryDaniel Rutherford (1772)1.00infobox
NitrogenElectron configuration[He] 2s2 2p31.00infobox
NitrogenElectronegativityPauling scale: 3.041.00infobox
NitrogenElectrons per shell2, 51.00infobox
NitrogenGroupgroup 15 (pnictogens)1.00infobox
NitrogenHeat of fusion(N2) 0.72 kJ/mol1.00infobox
NitrogenHeat of vaporisation(N2) 5.57 kJ/mol1.00infobox
NitrogenIonisation energies1st: 1402.3 kJ/mol1.00infobox
NitrogenIonisation energies2nd: 2856 kJ/mol1.00infobox
NitrogenIonisation energies3rd: 4578.1 kJ/mol1.00infobox
NitrogenIonisation energies(more)1.00infobox
NitrogenLattice constantsa = 411.6 pm c = 673.4 pm (at t.p.)1.00infobox
NitrogenMagnetic orderingdiamagnetic1.00infobox
NitrogenMain isotopes.mw-parser-output .isotopes-table{text-align:center;width:100%;border-collapse:collapse;margin:0;padding:0}.mw-parser-output .isotopes-table-headers>:not(:first-child){padding:0…1.00infobox
NitrogenMelting point(N2) 63.23 K ​(−209.92 °C, ​−345.86 °F)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Nitrogen bring nearby vocabulary together. In this analysis, examples include Liquid, Oxygen and Carbon. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Nitrogen
    • Liquid
    • Oxygen
    • Carbon
    • Used
    • Ammonia
    • Known
    • Dioxide
    • First
    • Many
    • Produced
    • Also
    • Chemistry
  • nitrogen
    • Liquid
    • Oxygen
    • Carbon
    • Used
    • Ammonia
    • Known
    • Dioxide
    • First
    • Many
    • Produced
    • Also
    • Chemistry
  • bond
    • Carbon
    • Chemistry
    • Thus
    • High
    • One
    • May
    • Although
    • Known
    • Acid
    • Element
    • Nitrates
    • Pressure
  • gas
    • Liquid
    • Nitrogen
    • Used
    • Produced
    • Oxygen
    • Pressure
    • N2
    • Air
    • Compounds
    • Hydrogen
    • Chemistry
    • Complexes
  • nitric acid
    • Acid
    • Nitric
    • Oxide
    • Nitrates
    • Important
    • Dioxide
    • Ammonia
    • Water
    • May
    • Produced
    • Nitrate
    • Hydrogen
  • asphyxiant gas
    • Liquid
    • Nitrogen
    • Used
    • Produced
    • Oxygen
    • Pressure
    • N2
    • Air
    • Compounds
    • Hydrogen
    • Chemistry
    • Complexes
  • azo compounds
    • Nitrogen
    • Many
    • Dinitrogen
    • Carbon
    • Nitrate
    • Complexes
    • N2
    • Known
    • Used
    • Gas
    • Form
    • Element
  • liquid nitrogen
    • Liquid
    • Nitrogen
    • Oxygen
    • Used
    • Carbon
    • Water
    • Produced
    • Also
    • Ammonia
    • Known
    • Dioxide
    • First

Connections between topic areas Semantic bridges

For Nitrogen, one of the stronger structural bridges in this analysis connects Nitrogen with Chemistry and compounds. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
NitrogenChemistry and compounds · splits 290 ⟂ 127
NitrogenProperties · splits 322 ⟂ 95
NitrogenOverview · splits 346 ⟂ 71
NitrogenApplications · splits 382 ⟂ 35
NitrogenHistory · splits 383 ⟂ 34
NitrogenOccurrence · splits 395 ⟂ 22
NitrogenGas · splits 406 ⟂ 11
NitrogenProduction · splits 409 ⟂ 8
NitrogenLiquid · splits 410 ⟂ 7
NitrogenBibliography · splits 413 ⟂ 4

Map overview Semantic statistics

Nitrogen

Nodes417
Edges416
Triples338
Avg. degree2
Density0.004796
Components1

Source & methodology

TTTA analyzes the structure around Nitrogen to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Applications & Standards, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Nitrogen · EN edition · Analysis: TopicsToTalkAbout

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