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Nihonium: History & Standards

Nihonium is a synthetic chemical element; it has symbol Nh and atomic number 113. It is extremely radioactive: its most stable known isotope, nihonium-286, has a half-life of about 10 seconds. In the periodic table, nihonium is a transactinide element in the p-block. It is a member of period 7 and group 13.

Language: English [EN]
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Nihonium topic overview

The analysis highlights History and Standards as prominent areas in the source structure around Nihonium.

Related topics
198
Source areas
6
Connected nodes
218
Extracted relationships
118
Concept neighborhoods
39
Bridge connections
218

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 · 72 topics
History · 52 topics
Predicted properties · 36 topics
Introduction · 30 topics
Experimental chemistry · 5 topics
Isotopes · 3 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.

278Nh
synth
282Nh
synth
283Nh
synth
284Nh
synth
285Nh
synth
286Nh
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

Introduction

History

Isotopes

Predicted properties

Experimental chemistry

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 Nihonium connects Entity context

The extracted context around Nihonium shows recurring relationship patterns in the source. For example, Nihonium → After, As Ogawa's, Before, E113, February, Fukushima Daiichi, In, In March, IUPAC, Jap, Japan, Japan's, Japanese, Japonium, JWP, Masataka Ogawa's, Morita, Nh, Nihon, Np Another extracted example is Nihonium → About, Bromine, Formation, From, III, It, JINR, Nh, NhOH, No, PTFE, The, This. Use these groups to spot repeated connection types before inspecting the individual relationships.

Nihonium

Top relations

related to Naming · 26
Nihonium → After, As Ogawa's, Before, E113, February, Fukushima Daiichi, In, In March, IUPAC, Jap, Japan, Japan's, Japanese, Japonium, JWP, Masataka Ogawa's, Morita, Nh, Nihon, Np
related to Experimental chemistry · 13
Nihonium → About, Bromine, Formation, From, III, It, JINR, Nh, NhOH, No, PTFE, The, This
related to Physical and atomic · 13
Nihonium → All, Both, Bulk, Computational, For, GPa, In, Periodic, Similar, SO, The, This, Thus
related to External links · 11
Nihonium → Elements, Mass, Nottingham, Periodic Table Archived, September, The Periodic Table, University, Uup Add Their Atomic, Uut, Videos, Wayback MachineDiscovery
related to Stability and half-lives · 6
Nihonium → All, Calculations, Coulomb, Researchers, The, This
related to Chemical · 5
Nihonium → Going, Hence, Nh, The, This
Ionisation energies · 4
Nihonium → (more), 1st: 704.9 kJ/mol (predicted), 2nd: 2240 kJ/mol (predicted), 3rd: 3020 kJ/mol (predicted)
related to Isotopes · 3
Nihonium → Eight, Several, There
is a · 2
Nihonium → synthetic chemical element, transactinide element in the p-block
related to Predicted properties · 2
Nihonium → Properties, Very

Important terminology

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

Important terminology

element decay jinr riken elements thallium fission team 113 nuclei reaction expected would known energy isotopes nucleus alpha spontaneous superheavy

Nihonium relationships Subject–Predicate–Object triples

TTTA extracted 118 structured relationships around Nihonium. Examples in this analysis include Nihonium → 278Nh → synth and Nihonium → Atomic number (Z) → 113. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Nihonium278Nhsynth1.00infobox
Nihonium282Nhsynth1.00infobox
Nihonium283Nhsynth1.00infobox
Nihonium284Nhsynth1.00infobox
Nihonium285Nhsynth1.00infobox
Nihonium286Nhsynth1.00infobox
Nihonium287Nhsynth1.00infobox
Nihonium290Nhsynth1.00infobox
NihoniumAtomic number (Z)1131.00infobox
NihoniumAtomic radiusempirical: 170 pm (predicted)1.00infobox
NihoniumBlockp-block1.00infobox
NihoniumBoiling point1430 K ​(1130 °C, ​2070 °F) (predicted)1.00infobox
NihoniumCAS Number54084-70-71.00infobox
NihoniumCovalent radius172–180 pm (extrapolated)1.00infobox
NihoniumCrystal structure​hexagonal close-packed (hcp) (predicted)1.00infobox
NihoniumDensity (near r.t.)16 g/cm3 (predicted)1.00infobox
NihoniumDiscoveryRiken (Japan, first undisputed claim 2004) JINR (Russia) and Livermore (US, first announcement 2003)1.00infobox
NihoniumElectron configuration[Rn] 5f14 6d10 7s2 7p1 (predicted)1.00infobox
NihoniumElectrons per shell2, 8, 18, 32, 32, 18, 3 (predicted)1.00infobox
NihoniumGroupgroup 13 (boron group)1.00infobox
NihoniumHeat of fusion7.61 kJ/mol (extrapolated)1.00infobox
NihoniumHeat of vaporisation130 kJ/mol (predicted)1.00infobox
NihoniumIonisation energies1st: 704.9 kJ/mol (predicted)1.00infobox
NihoniumIonisation energies2nd: 2240 kJ/mol (predicted)1.00infobox
NihoniumIonisation energies3rd: 3020 kJ/mol (predicted)1.00infobox
NihoniumIonisation energies(more)1.00infobox
NihoniumMain 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
NihoniumMelting point700 K ​(430 °C, ​810 °F) (predicted)1.00infobox
NihoniumNamingAfter Japan (Nihon in Japanese)1.00infobox
NihoniumNatural occurrencesynthetic1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Nihonium bring nearby vocabulary together. In this analysis, examples include Thallium, Expected and Group. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Nihonium
    • Thallium
    • Expected
    • Group
    • Elements
    • Isotopes
    • Would
    • Stable
    • Two
    • Superheavy
    • Energy
    • Known
    • Half-life
  • nihonium
    • Thallium
    • Expected
    • Group
    • Elements
    • Isotopes
    • Would
    • Stable
    • Two
    • Superheavy
    • Energy
    • Known
    • Half-life
  • synthetic chemical element
    • Jinr
    • Discovery
    • Llnl
    • Jwp
    • Decay
    • Number
    • Riken
    • Element
    • Elements
    • Group
    • Atomic
    • Produced
  • atomic number
    • Number
    • Discovery
    • Nuclei
    • Superheavy
    • Element
    • Isotopes
    • Produced
    • Jwp
    • Decay
    • Half-life
    • Nuclides
    • Llnl
  • isotope
    • Half-life
    • Also
    • Llnl
    • Known
    • Chain
    • Reaction
    • Decay
    • Two
    • Jinr
    • Daughter
    • Discovery
    • Observed
  • half-life
    • Isotope
    • Known
    • Also
    • Decay
    • Number
    • Nuclei
    • Stable
    • Chain
    • Two
    • Isotopes
    • Alpha
    • Nihonium
  • transactinide element
    • Jinr
    • Discovery
    • Llnl
    • Jwp
    • Decay
    • Number
    • Riken
    • Elements
    • Atomic
    • Produced
    • Isotope
    • Nuclei
  • riken
    • Team
    • Discovery
    • Decay
    • Jwp
    • Reaction
    • Spontaneous
    • Alpha
    • Fission
    • Elements
    • Name
    • Observed
    • Chain

Connections between topic areas Semantic bridges

For Nihonium, one of the stronger structural bridges in this analysis connects Nihonium 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
Nihonium — Overview · splits 146 ⟂ 73
Nihonium — History · splits 166 ⟂ 53
Nihonium — Predicted properties · splits 182 ⟂ 37
Nihonium — Introduction · splits 188 ⟂ 31
Nihonium — Bibliography · splits 205 ⟂ 14
Nihonium — Experimental chemistry · splits 213 ⟂ 6
Nihonium — Isotopes · splits 215 ⟂ 4

Map overview Semantic statistics

Nihonium

Nodes219
Edges218
Triples118
Avg. degree1.99
Density0.009132
Components1

Source & methodology

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

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

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