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Helium: Characters, History, Applications & Standards

Helium (from Ancient Greek: ἥλιος, romanized: helios, lit. 'sun') is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements, and it does not have a melting point at standard…

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Helium topic overview

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

Related topics
361
Source areas
7
Connected nodes
368
Extracted relationships
191
Related term clusters
67
Bridge connections
368

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.

Overview · 143 topics
History · 87 topics
Characteristics · 46 topics
Occurrence and production · 29 topics
Compounds · 25 topics
Inhalation and safety · 19 topics
Applications · 12 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.

3He
0.0002%
4He
99.9998%
Appearance
colorless gas, exhibiting a gray, cloudy glow (or reddish-orange if an especially high voltage is used) when placed in an electric field
Atomic number (Z)
2
Atomic radius
empirical: 31 pm
Block
s-block

Start with your topic. Discover where to go next.

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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

Characteristics

Compounds

Occurrence and production

Applications

Inhalation and safety

For the semantics nerds

You can skip this section if you’re here for content ideas and keyword inspiration.

Advanced semantic analysis

How Helium connects Entity context

The extracted context around Helium shows recurring relationship patterns in the source. For example, Helium → American Great Plains, Bolling Field, C-7, Cady, David McFarland, December, Dexter, Earth, Erasmus Haworth, Following, Hamilton Cady, Hampton Roads, Kansas, Lawrence, McFarland, Naval Aircraft Factory-built USS, Navy's, Navy's C-class, September, Shenandoah Another extracted example is Helium → August, D1, D2 Fraunhofer, D3, Earth, Edward Frankland, English, French, Greek, Guntur, India, Italian, Jules Janssen, Lockyer, Luigi Palmieri, Mount Vesuvius, Norman Lockyer, On October, Sun. Use these groups to spot repeated connection types before inspecting the individual relationships.

Helium

Top relations

related to Extraction and use · 26
Helium → American Great Plains, Bolling Field, C-7, Cady, David McFarland, December, Dexter, Earth, Erasmus Haworth, Following, Hamilton Cady, Hampton Roads, Kansas, Lawrence, McFarland, Naval Aircraft Factory-built USS, Navy's, Navy's C-class, September, Shenandoah
related to Scientific discoveries · 19
Helium → August, D1, D2 Fraunhofer, D3, Earth, Edward Frankland, English, French, Greek, Guntur, India, Italian, Jules Janssen, Lockyer, Luigi Palmieri, Mount Vesuvius, Norman Lockyer, On October, Sun
related to Modern extraction and distribution · 16
Helium → Activated, Air Liquide, Algeria, China, Extracting, Grade-A, Ningxia, Poland, Qatar, Qatar's, Qatargas, Russia, SCM, Since, Tanzania, United States
related to Isotopes · 13
Helium → Big Bang, Earth, Earth's, Extraplanetary, Gerald Kulcinski, Helium-3, Helium-4, Moon, Rocks, The Moon's, Thus, Trace, Unlike
related to Compounds · 11
Helium → Brønsted, He2, HeD, HeH, HeNe, HgHe, HgHe10, LiHe, Van, Waals, WHe2
related to Conservation advocates · 9
Helium → According, Congress, International Helium Agency, Nobel, Nuttall, Prices, Richardson, Robert Coleman Richardson, Stop
has application · 8
Helium → Breathing, Controlled, Cryogenics, Leak, MRI, NMR, Pressurizing, Welding
related to Hazards · 8
Helium → Australian, Death, Fatalities, Inhaling, South Florida, Texas, Vancouver, Victoria
related to Natural abundance · 7
Helium → Although, Big Bang, CNO, Earth, Earth's, HeH, Universe
is a · 6
Helium → commonly used carrier gas for gas chromatography.The age of rocks and minerals that contain uranium and thorium can be estimated by measuring the level of helium with a process…, least water-soluble monatomic gas, non-renewable resource because once released into the atmosphere, second most abundant element in the known Universe, second simplest atom to model, simple asphyxiant and so displaces oxygen needed for normal respiration

Important terminology

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

Important terminology

gas helium-4 hydrogen used liquid also states helium-3 elements natural use united two produced ii element pressure point high per

Helium relationships Subject–Predicate–Object triples

TTTA extracted 191 structured relationships around Helium. Examples in this analysis include Helium → 3He → 0.0002% and Helium → 4He → 99.9998%. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Helium3He0.0002%1.00infobox
Helium4He99.9998%1.00infobox
HeliumAppearancecolorless gas, exhibiting a gray, cloudy glow (or reddish-orange if an especially high voltage is used) when placed in an electric field1.00infobox
HeliumAtomic number (Z)21.00infobox
HeliumAtomic radiusempirical: 31 pm1.00infobox
HeliumBlocks-block1.00infobox
HeliumBoiling point4.222 K ​(−268.928 °C, ​−452.070 °F)1.00infobox
HeliumCAS Number7440-59-71.00infobox
HeliumCovalent radius28 pm1.00infobox
HeliumCritical point5.1953 K, 0.22746 MPa1.00infobox
HeliumCrystal structure​hexagonal close-packed (hcp)1.00infobox
HeliumDensity (at STP)0.1786 g/L1.00infobox
HeliumDiscoveryNorman Lockyer (1868)1.00infobox
HeliumElectron configuration1s21.00infobox
HeliumElectronegativityPauling scale: no data1.00infobox
HeliumElectrons per shell21.00infobox
HeliumFirst isolationWilliam Ramsay, Per Teodor Cleve, Abraham Langlet (1895)1.00infobox
HeliumGroupgroup 18 (noble gases)1.00infobox
HeliumHeat of fusion0.0138 kJ/mol1.00infobox
HeliumHeat of vaporization0.0829 kJ/mol1.00infobox
HeliumIonization energies1st: 2372.3 kJ/mol1.00infobox
HeliumIonization energies2nd: 5250.5 kJ/mol1.00infobox
HeliumMagnetic orderingdiamagnetic1.00infobox
HeliumMolar heat capacity20.78 J/(mol·K)1.00infobox
HeliumMolar magnetic susceptibility−1.88×10−6 cm3/mol (298 K)1.00infobox
HeliumNamingafter Helios, Greek god of the Sun1.00infobox
HeliumNatural occurrenceprimordial1.00infobox
HeliumOxidation statescommon: (none)1.00infobox
HeliumP (Pa)Vapor pressure (defined by ITS-90) P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1.23 1.67 2.48 4.211.00infobox
HeliumPeriodperiod 11.00infobox

Related concept clusters Related term clusters

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

  • Helium
    • Gas
    • Used
    • Liquid
    • Ii
    • States
    • Pressure
    • United
    • Hydrogen
    • Natural
    • Per
    • Use
    • Temperature
  • helium
    • Gas
    • Used
    • Liquid
    • Ii
    • States
    • Pressure
    • United
    • Hydrogen
    • Natural
    • Per
    • Use
    • Temperature
  • gas
    • Helium
    • Natural
    • Used
    • States
    • United
    • Nitrogen
    • Hydrogen
    • Cubic
    • Produced
    • Large
    • Small
    • Air
  • noble gas
    • Helium
    • Natural
    • Used
    • States
    • United
    • Nitrogen
    • Hydrogen
    • Cubic
    • Produced
    • Large
    • Small
    • Air
  • hydrogen
    • Nitrogen
    • Use
    • Gas
    • Liquid
    • Stable
    • Used
    • Quantum
    • New
    • Nuclear
    • Production
    • Produced
    • Ii
  • helium-4
    • Helium-3
    • Fusion
    • Stable
    • Nuclear
    • Produced
    • Two
    • Quantum
    • Hydrogen
    • Liquid
    • Production
    • Per
    • Point
  • nuclear fusion
    • Fusion
    • Nuclear
    • Hydrogen
    • Helium-4
    • Stable
    • Production
    • Helium-3
    • Point
    • Produced
    • Use
    • Pressure
    • Per
  • natural gas fields
    • Helium
    • Natural
    • States
    • Used
    • United
    • Nitrogen
    • Earth
    • Hydrogen
    • Use
    • Cubic
    • Produced
    • Large

Connections between topic areas Semantic bridges

For Helium, one of the stronger structural bridges in this analysis connects Helium with Overview. 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
Helium — Overview · splits 225 ⟂ 144
Helium — History · splits 281 ⟂ 88
Helium — Characteristics · splits 322 ⟂ 47
Helium — Occurrence and production · splits 339 ⟂ 30
Helium — Compounds · splits 343 ⟂ 26
Helium — Inhalation and safety · splits 349 ⟂ 20
Helium — Applications · splits 356 ⟂ 13

Map overview Semantic statistics

Helium

Nodes369
Edges368
Triples191
Avg. degree1.99
Density0.00542
Components1

Source & methodology

TTTA analyzes the structure around Helium to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Characters, 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 — Helium · EN edition · Analysis: TopicsToTalkAbout

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