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Dubnium is a synthetic chemical element; it has symbol Db and atomic number 105. It is highly radioactive: the most stable known isotope, dubnium-268, has a half-life of about 16 hours. This greatly limits extended research on the element.
The analysis highlights Standards, Discovery and Predicted properties as prominent areas in the source structure around Dubnium.
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.
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.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
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.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
The extracted context around Dubnium shows recurring relationship patterns in the source. For example, Dubnium → After, Albert Ghiorso, Another, Bo, Both, Danish, Dubna, Georgy Flerov, German, Glenn Seaborg, Greek, Ha, In, IUPAC, JINR, Latin, LBL, Neither, Niels Bohr, Ns Another extracted example is Dubnium → Berkeley, Experimental, It, JINR, Surprisingly, The, These, They. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
element nuclei group 105 niobium tantalum nucleus jinr elements energy atomic fission superheavy chemistry first decay dubna discovery two produced
TTTA extracted 83 structured relationships around Dubnium. Examples in this analysis include Dubnium → 262Db → synth and Dubnium → Atomic number (Z) → 105. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Dubnium | 262Db | synth | 1.00 | infobox |
| Dubnium | 263Db | synth | 1.00 | infobox |
| Dubnium | 266Db | synth | 1.00 | infobox |
| Dubnium | 267Db | synth | 1.00 | infobox |
| Dubnium | 268Db | synth | 1.00 | infobox |
| Dubnium | 270Db | synth | 1.00 | infobox |
| Dubnium | Atomic number (Z) | 105 | 1.00 | infobox |
| Dubnium | Atomic radius | empirical: 139 pm (estimated) | 1.00 | infobox |
| Dubnium | Block | d-block | 1.00 | infobox |
| Dubnium | CAS Number | 53850-35-4 | 1.00 | infobox |
| Dubnium | Covalent radius | 149 pm (estimated) | 1.00 | infobox |
| Dubnium | Crystal structure | body-centered cubic (bcc) (predicted) | 1.00 | infobox |
| Dubnium | Density (near r.t.) | 21.6 g/cm3 (predicted) | 1.00 | infobox |
| Dubnium | Discovery | independently by the Lawrence Berkeley Laboratory and the Joint Institute for Nuclear Research (1970) | 1.00 | infobox |
| Dubnium | Electron configuration | [Rn] 5f14 6d3 7s2 | 1.00 | infobox |
| Dubnium | Electrons per shell | 2, 8, 18, 32, 32, 11, 2 | 1.00 | infobox |
| Dubnium | Group | group 5 | 1.00 | infobox |
| Dubnium | Ionization energies | 1st: 665 kJ/mol | 1.00 | infobox |
| Dubnium | Ionization energies | 2nd: 1547 kJ/mol | 1.00 | infobox |
| Dubnium | Ionization energies | 3rd: 2378 kJ/mol | 1.00 | infobox |
| Dubnium | Ionization energies | (more) (all but first estimated) | 1.00 | infobox |
| Dubnium | Main 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… | 1.00 | infobox |
| Dubnium | Naming | after Dubna, Moscow Oblast, Russia, site of Joint Institute for Nuclear Research | 1.00 | infobox |
| Dubnium | Natural occurrence | synthetic | 1.00 | infobox |
| Dubnium | Oxidation states | common: (none) +5 (+3), (+4), (+5) | 1.00 | infobox |
| Dubnium | Period | period 7 | 1.00 | infobox |
| Dubnium | Phase .mw-parser-output .nobold{font-weight:normal}at STP | solid (predicted) | 1.00 | infobox |
| Dubnium | Pronunciation | /ˈduːbniəm/ ⓘ (DOOB-nee-əm) | 1.00 | infobox |
| Dubnium | Pronunciation | /ˈdʌbniəm/ ⓘ (DUB-nee-əm) | 1.00 | infobox |
| Dubnium | is a | synthetic chemical element | 0.90 | text |
The concept neighborhoods around Dubnium bring nearby vocabulary together. In this analysis, examples include Niobium, Tantalum and Group. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Dubnium, one of the stronger structural bridges in this analysis connects Dubnium with Introduction. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Dubnium to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Standards, Discovery & Predicted properties, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Dubnium · EN edition · Analysis: TopicsToTalkAbout