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Cerium: Characters, History & Applications

Cerium is a chemical element; it has symbol Ce and atomic number 58, and is a soft, ductile, and silvery-white metal that tarnishes when exposed to air. Cerium is the second element in the lanthanide series, and while it often shows the oxidation state of +3 characteristic of the series, it also has a stable +4 state that does not oxidize water. It is…

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Cerium topic overview

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

Related topics
162
Source areas
7
Connected nodes
173
Extracted relationships
246
Concept neighborhoods
32
Bridge connections
173

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.

Compounds · 35 topics
Characteristics · 33 topics
Overview · 28 topics
Applications · 25 topics
Biological role and precautions · 15 topics
Occurrence and production · 14 topics
History · 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.

134Ce
synth
136Ce
0.186%
138Ce
0.251%
139Ce
synth
140Ce
88.4%
141Ce
synth

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

Characteristics

Compounds

History

Occurrence and production

Applications

Biological role and precautions

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 Cerium connects Entity context

The extracted context around Cerium shows recurring relationship patterns in the source. For example, Cerium → Also, Bastnäsite, Because, Ce, Ce4, CeO2, Earth's, First, In, IV, Levinson, Ln2O3, LnIIICO3F, Monazite, O2, REE, Th, The, This, Thus Another extracted example is Cerium → After, Bastnäs, Berzelius, Carl Gustaf Mosander, Ceres, Ceria, Germany, He, Humphry Davy, It, Jöns Jakob Berzelius, Martin Heinrich Klaproth, Mosander, Roman, Sweden, The, Tungsten, Wilhelm Hisinger. Use these groups to spot repeated connection types before inspecting the individual relationships.

Cerium

Top relations

related to Occurrence and production · 21
Cerium → Also, Bastnäsite, Because, Ce, Ce4, CeO2, Earth's, First, In, IV, Levinson, Ln2O3, LnIIICO3F, Monazite, O2, REE, Th, The, This, Thus
related to history · 18
Cerium → After, Bastnäs, Berzelius, Carl Gustaf Mosander, Ceres, Ceria, Germany, He, Humphry Davy, It, Jöns Jakob Berzelius, Martin Heinrich Klaproth, Mosander, Roman, Sweden, The, Tungsten, Wilhelm Hisinger
related to Other uses · 15
Cerium → Ce, Ce2S3, Ce3S4, CO, Despite, Fe, Manhattan Project, Mg, Mn, Ni, NOx, Other, Pu-Ce, Pu-Ce-Co, These Al-Ce
related to Oxides and chalcogenides · 15
Cerium → Ce, Ce2Z3, Ce3, CeO2, Ceria, CeZ, III, IV, Many, Se, Te, The, Thus, While CeZ2, Z2
related to Cerium(IV) complexes · 14
Cerium → Aqueous, Belousov, CAN, Ce, Ce4, Classically, Due, In, It, IV, NH4, NO3, The, Zhabotinsky
related to Halides · 14
Cerium → Aside, Br, Ce, CeCl2, CeF2, CeF4, CeX3, Cl, H2O, It, IV, The, Unlike, Upon
related to Gas mantles and pyrophoric alloys · 13
Cerium → Applications, Auschwitz, Austrian, Carl Auer, Due, In, Its, Primo Levi, Six, The, This, Usually, Welsbach
related to Physical · 10
Cerium → Ce2, Ce4, For, In, It, Its, Most, The, This, Xe
related to Chemical properties of the element · 8
Cerium → Being, Ce, Ce3, III, It, Like, More, The
related to Compounds · 7
Cerium → Ce, Ce3, Ce4, III, IV, The, This

Important terminology

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

Important terminology

lanthanides ce used element oxide iv isotopes also metal stable known lanthanum oxidation lanthanide thorium praseodymium form ceria iii structure

Cerium relationships Subject–Predicate–Object triples

TTTA extracted 246 structured relationships around Cerium. Examples in this analysis include Cerium → 134Ce → synth and Cerium → 136Ce → 0.186%. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Cerium134Cesynth1.00infobox
Cerium136Ce0.186%1.00infobox
Cerium138Ce0.251%1.00infobox
Cerium139Cesynth1.00infobox
Cerium140Ce88.4%1.00infobox
Cerium141Cesynth1.00infobox
Cerium142Ce11.1%1.00infobox
Cerium143Cesynth1.00infobox
Cerium144Cesynth1.00infobox
CeriumAppearancesilvery white1.00infobox
Ceriumat T (K)19921.00infobox
CeriumAtomic number (Z)581.00infobox
CeriumAtomic radiusempirical: 181.8 pm1.00infobox
CeriumBlockf-block1.00infobox
CeriumBoiling point3716 K ​(3443 °C, ​6229 °F)1.00infobox
CeriumBrinell hardness186–412 MPa1.00infobox
CeriumBulk modulusγ-Ce: 21.5 GPa1.00infobox
CeriumCAS Number7440-45-11.00infobox
CeriumCovalent radius204±9 pm1.00infobox
CeriumCrystal structureβ-Ce: ​double hexagonal close-packed (dhcp) (hP4)1.00infobox
CeriumCrystal structureγ-Ce: ​face-centered cubic (fcc) (cF4)1.00infobox
CeriumDensity (at 20° C)β-Ce: 6.689 g/cm3 γ-Ce: 6.769 g/cm31.00infobox
CeriumDiscoveryMartin Heinrich Klaproth, Wilhelm Hisinger, Jöns Jakob Berzelius (1803)1.00infobox
CeriumElectrical resistivityβ-Ce, poly: 828 nΩ⋅m (at r.t.)1.00infobox
CeriumElectron configuration[Xe] 4f1 5d1 6s21.00infobox
CeriumElectronegativityPauling scale: 1.121.00infobox
CeriumElectrons per shell2, 8, 18, 19, 9, 21.00infobox
CeriumFirst isolationWilliam Francis Hillebrand (1875)1.00infobox
CeriumGroupf-block groups (no number)1.00infobox
CeriumHeat of fusion5.46 kJ/mol1.00infobox

Related concept clusters Concept neighborhoods

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

  • Cerium
    • Used
    • Oxide
    • Iv
    • Lanthanides
    • Iii
    • Oxidation
    • Element
    • Ce
    • Gas
    • Lanthanide
    • Aqueous
    • Water
  • cerium
    • Used
    • Oxide
    • Iv
    • Lanthanides
    • Iii
    • Oxidation
    • Element
    • Ce
    • Gas
    • Lanthanide
    • Aqueous
    • Water
  • chemical element
    • Number
    • Oxidation
    • Common
    • Gas
    • Lanthanide
    • Structure
    • Isotopes
    • Stable
    • Also
    • Used
    • First
    • Neodymium
  • oxidation state
    • State
    • Aqueous
    • Elements
    • Rare-earth
    • Stable
    • Iv
    • Water
    • Electron
    • Neodymium
    • Number
    • Applications
    • Common
  • cerium(iv) oxide
    • Ceria
    • Used
    • Oxide
    • Praseodymium
    • Iv
    • Gas
    • Thorium
    • Structure
    • Oxidation
    • Lanthanides
    • Iii
    • Element
  • cerium(iii) oxide
    • Iv
    • Ceria
    • Gas
    • Used
    • Oxide
    • Known
    • Thorium
    • Lanthanides
    • Iii
    • Oxidation
    • Element
    • Ce
  • cerium(iv) sulfate
    • Used
    • Oxide
    • Praseodymium
    • Iv
    • Gas
    • Structure
    • Oxidation
    • Lanthanides
    • Iii
    • Element
    • Ce
    • Lanthanide
  • thorium oxide
    • Praseodymium
    • Ceria
    • Lanthanum
    • Used
    • Oxide
    • Thorium
    • Discovered
    • Lanthanides
    • Neodymium
    • Number
    • Applications
    • Common

Connections between topic areas Semantic bridges

For Cerium, one of the stronger structural bridges in this analysis connects Cerium with 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
Cerium — Compounds · splits 138 ⟂ 36
Cerium — Characteristics · splits 140 ⟂ 34
Cerium — Overview · splits 145 ⟂ 29
Cerium — Applications · splits 148 ⟂ 26
Cerium — Biological role and precautions · splits 158 ⟂ 16
Cerium — Occurrence and production · splits 159 ⟂ 15
Cerium — History · splits 161 ⟂ 13
Cerium — Bibliography · splits 170 ⟂ 4

Map overview Semantic statistics

Cerium

Nodes174
Edges173
Triples246
Avg. degree1.99
Density0.011494
Components1

Source & methodology

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

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

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