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Extended periodic table

An extended periodic table theorizes about chemical elements beyond those currently known and proven. The element with the highest atomic number known is oganesson (Z = 118), which completes the seventh period (row) in the periodic table. All elements in the eighth period and beyond thus remain purely hypothetical.

History, Searches for undiscovered elements & Overview

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Overview

History

Predicted structures of an extended periodic table

  • Vadim Nefedov Vadim Nefedov?action=edit&redlink=1
  • Ru Нефёдов, Вадим Иванович
  • Andrey Kulsha Andrey Kulsha?action=edit&redlink=1

Searches for undiscovered elements

Predicted properties of eighth-period elements

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Extended periodic table

Nodes256
Edges255
Triples29
Avg. degree1.99
Density0.007813
Components1

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Extended periodic table

Top relations

related to External links · 13
Extended periodic table → Archived, Eric, Eric Scerri's, Holler, Images, Jeries, Jim, Kentucky, Retrieved, Rihani, Scerri, The, University
related to Kulsha · 8
Extended periodic table → Andrey Kulsha, Based, Computational, Fricke, In, Kulsha, Nefedov, Pyykkö's

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Important terminology

elements element expected table would electron beyond periodic stability nuclei 120 also predicted may atomic number first superheavy 164 period

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
306122instance ofThe two attempts in the 1970s to synthesize element 122 were both propelled by the research investigating whether superheavy elements could potentially be naturally occurring.Se…0.80text
132Sninstance ofThe results reveal how superheavy nuclei fission predominantly by expelling closed shell nuclei0.80text
132Sninstance offission fragments clustered around doubly magic nuclei0.80text
element 125 will require more sensitive experiments.Unbihexiuminstance ofand the synthesis of heavier elements0.80text
element 125 will require more sensitive experimentsinstance ofand the synthesis of heavier elements0.80text
354126instance ofthe same analysis suggests that proton shell closures may be relatively weak or even nonexistent in some cases0.80text
meaning that such nuclei might not be doubly magicinstance ofthe same analysis suggests that proton shell closures may be relatively weak or even nonexistent in some cases0.80text
stability will instead be primarily determined by strong neutron shell closuresinstance ofthe same analysis suggests that proton shell closures may be relatively weak or even nonexistent in some cases0.80text
Extended periodic tablerelated to External linksHoller0.60section
Extended periodic tablerelated to External linksJim0.60section
Extended periodic tablerelated to External linksImages0.60section
Extended periodic tablerelated to External linksUniversity0.60section

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