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• Transactinide_element abstract "In chemistry, transactinide elements (also, transactinides, or super-heavy elements) are the chemical elements with atomic numbers greater than those of the actinides, the heaviest of which is lawrencium (103).Transactinide elements are also transuranic elements, that is, have an atomic number greater than that of uranium (92), an actinide. The further distinction of having an atomic number greater than the actinides is significant in several ways:The transactinide elements all have electrons in the 6d subshell in their ground state .Except for rutherfordium and dubnium, even the longest-lasting isotopes of transactinide elements have extremely short half-lives, measured in seconds, or smaller units.The element naming controversy involved the first five or six transactinide elements. These elements thus used three-letter systematic names for many years after their discovery had been confirmed. (Usually the three-letter names are replaced with two-letter names relatively shortly after a discovery has been confirmed.)Transactinides are radioactive and have only been obtained synthetically in laboratories. None of these elements has ever been collected in a macroscopic sample. Transactinide elements are all named after physicists and chemists or important locations involved in the synthesis of the elements.Chemistry Nobelist Glenn T. Seaborg who first proposed the actinide concept which led to the acceptance of the actinide series also proposed the existence of a transactinide series ranging from element 104 to 121 and a superactinide series approximately spanning elements 122 to 153. The transactinide seaborgium is named in his honor.IUPAC defines an element to exist if its lifetime is longer than 10−14 seconds, which is the time it takes for the nucleus to form an electronic cloud.".
• Transactinide_element thumbnail Super_heavy_elements_(polyatomic).svg?width=300.
• Transactinide_element wikiPageID "2231059".
• Transactinide_element wikiPageRevisionID "603898528".
• Transactinide_element hasPhotoCollection Transactinide_element.
• Transactinide_element subject Category:Chemical_element_groups.
• Transactinide_element subject Category:Nuclear_physics.
• Transactinide_element type Abstraction100002137.
• Transactinide_element type ChemicalElementGroups.
• Transactinide_element type Group100031264.
• Transactinide_element comment "In chemistry, transactinide elements (also, transactinides, or super-heavy elements) are the chemical elements with atomic numbers greater than those of the actinides, the heaviest of which is lawrencium (103).Transactinide elements are also transuranic elements, that is, have an atomic number greater than that of uranium (92), an actinide.".
• Transactinide_element label "Elemento transactinídeo".
• Transactinide_element label "Transactinide element".
• Transactinide_element label "Transactinide".
• Transactinide_element label "Transactinide".
• Transactinide_element label "Transactinoide".
• Transactinide_element label "Transactínido".
• Transactinide_element label "超アクチノイド元素".
• Transactinide_element label "锕系后元素".
• Transactinide_element sameAs Transactinoide.
• Transactinide_element sameAs Transactínido.
• Transactinide_element sameAs Transactinide.
• Transactinide_element sameAs 超アクチノイド元素.
• Transactinide_element sameAs 초악티늄_원소.
• Transactinide_element sameAs Transactinide.
• Transactinide_element sameAs Elemento_transactinídeo.
• Transactinide_element sameAs m.06xtck.
• Transactinide_element sameAs Q428778.
• Transactinide_element sameAs Q428778.
• Transactinide_element sameAs Transactinide_element.
• Transactinide_element wasDerivedFrom Transactinide_element?oldid=603898528.
• Transactinide_element depiction Super_heavy_elements_(polyatomic).svg.
• Transactinide_element isPrimaryTopicOf Transactinide_element.