Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Copernicium

Copernicium is a synthetic chemical element; it has symbol Cn and atomic number 112. Its known isotopes are extremely radioactive, and have only been created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 30 seconds. Copernicium was first created in February 1996 by the GSI Helmholtz Centre for Heavy Ion…

History & Standards

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Copernicium. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

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

283Cn
synth
285Cn
synth
286Cn
synth
Atomic number (Z)
112
Atomic radius
calculated: 147 pm (predicted)
Block
d-block

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Introduction

History

Isotopes

Predicted properties

Experimental atomic gas phase 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.

Map overview Semantic statistics

Copernicium

Nodes143
Edges142
Triples139
Avg. degree1.99
Density0.013986
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Copernicium

Top relations

related to Chemical · 25
Copernicium → Analogous, As, Cn, Cn2, CnBr2, CnCl2, CnF, CnF2, CnF4, CnF6, Copernicium's, Due, Hg, Hg2, HgF2, HgF4, However, II, In, It
related to Discovery · 24
Copernicium → Another, Darmstadt, Dubna, February, Gas-Filled Recoil Separator, Germany, Gesellschaft, GSI, GSI's, In May, Joint Institute, JWP, Ninov, Nuclear Research, RIKEN, Russia, Schwerionenforschung, Search, Sigurd Hofmann, Super-Heavy Element Using
related to Experimental atomic gas phase chemistry · 18
Copernicium → Analysis, April, As, Aufbau, Detection, Experiments, FLNR, Given, However, In, Interest, JINR, May, Owing, PSI, Rn, The, This
related to Physical and atomic · 14
Copernicium → Calculations, Cn, Cn2, Due, Fermi, However, In, Its, Like, Predictions, Solid, Some, The, This
related to Naming · 12
Copernicium → After, Although, Cp, E112, GSI, In, IUPAC, July, Nicolaus Copernicus, On, Using Mendeleev's, Uub
Ionization energies · 4
Copernicium → (more) (all estimated), 1st: 1155 kJ/mol, 2nd: 2170 kJ/mol, 3rd: 3160 kJ/mol
related to External links · 4
Copernicium → Nottingham, The Periodic Table, University, Videos
related to Half-lives · 4
Copernicium → All, It, Other, The
related to Isotopes · 4
Copernicium → Eight, Most, Several, The
is a · 3
Copernicium → d-block transactinide element and a group 12 element, more volatile homologue of mercury, synthetic chemical element

Important terminology Word statistics

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

Important terminology

mercury nuclei element decay nucleus may energy predicted elements fission 12 isotopes properties group chemical reaction produced known spontaneous due

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Copernicium283Cnsynth1.00infobox
Copernicium285Cnsynth1.00infobox
Copernicium286Cnsynth1.00infobox
CoperniciumAtomic number (Z)1121.00infobox
CoperniciumAtomic radiuscalculated: 147 pm (predicted)1.00infobox
CoperniciumBlockd-block1.00infobox
CoperniciumBoiling point340 ± 10 K ​(67 ± 10 °C, ​153 ± 18 °F) (predicted)1.00infobox
CoperniciumCAS Number54084-26-31.00infobox
CoperniciumCovalent radius122 pm (predicted)1.00infobox
CoperniciumCrystal structure​hexagonal close-packed (hcp) (predicted)1.00infobox
CoperniciumDensity (near r.t.)14.0 g/cm3 (predicted)1.00infobox
CoperniciumDiscoveryGesellschaft für Schwerionenforschung (1996)1.00infobox
CoperniciumElectron configuration[Rn] 5f14 6d10 7s2 (predicted)1.00infobox
CoperniciumElectrons per shell2, 8, 18, 32, 32, 18, 2 (predicted)1.00infobox
CoperniciumGroupgroup 121.00infobox
CoperniciumIonization energies1st: 1155 kJ/mol1.00infobox
CoperniciumIonization energies2nd: 2170 kJ/mol1.00infobox
CoperniciumIonization energies3rd: 3160 kJ/mol1.00infobox
CoperniciumIonization energies(more) (all estimated)1.00infobox
CoperniciumMain 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
CoperniciumMelting point283 ± 11 K ​(10 ± 11 °C, ​50 ± 20 °F) (predicted)1.00infobox
CoperniciumNamingafter Nicolaus Copernicus1.00infobox
CoperniciumNatural occurrencesynthetic1.00infobox
CoperniciumOxidation statescommon: (none) +2 (+2), (+4)1.00infobox
CoperniciumPeriodperiod 71.00infobox
CoperniciumPhase .mw-parser-output .nobold{font-weight:normal}at STPliquid (predicted)1.00infobox
CoperniciumPronunciation/ˌkoʊpərˈnɪsiəm/ ⓘ ​(KOH-pər-NISS-ee-əm)1.00infobox
CoperniciumTriple point283 K, ​25 kPa (predicted)1.00infobox
Coperniciumis asynthetic chemical element0.90text
Coperniciumis ad-block transactinide element and a group 12 element0.90text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.